2007 Volvo C70 AutomaticFACTORY OEM SERVICE PROCEDURE

Engine Control Module (ECM) DTCS - B5254T3

ENGINE CONTROL MODULE (ECM) - DTC INDEX

OBD-II Code DTC Description
P2229 ECM-112C Atmospheric pressure sensor. Signal too high
P2228 ECM-112D Atmospheric pressure sensor. Signal too low
P2227 ECM-1130 Atmospheric pressure sensor. Faulty signal
P2227 ECM-113B Atmospheric pressure sensor. Signal missing
P2227 ECM-113C Atmospheric pressure sensor. Signal too high
P2227 ECM-113D Atmospheric pressure sensor. Signal too low
P0100 ECM-120C Mass air flow. Faulty signal
P0100 ECM-120D Mass air flow. Signal missing
P0103 ECM-122C Mass air flow (MAF) sensor. Flow too high
P0102 ECM-122D Mass air flow (MAF) sensor. Flow too low
P0101 ECM-1230 Air mass. Signal too low
P0101 ECM-123B Air mass. Signal too high
P0101 ECM-123C Air mass. Signal too high
P0101 ECM-123D Air mass. Signal too low
P0238 ECM-125C Boost pressure sensor. Signal too high
P0237 ECM-125D Boost pressure sensor. Signal too low
P0236 ECM-1260 Boost pressure sensor. Signal too high
P0236 ECM-126B Boost pressure sensor. Signal too low
P0236 ECM-126C Boost pressure sensor. Signal too high
P0236 ECM-126D Boost pressure sensor. Signal too low
P0113 ECM-131C Intake air temperature (IAT) sensor. Signal too high
P0112 ECM-131D Intake air temperature (IAT) sensor. Signal too low
P0110 ECM-1320 Intake Air Temperature (IAT) Sensor. Faulty signal
NA ECM-132C Intake air temperature (IAT) sensor. Signal too high
P0111 ECM-133C Intake air temperature (IAT) sensor inlet. Signal too high
P0111 ECM-133D Intake air temperature (IAT) sensor inlet. Signal too low
NA ECM-1410 Outside temperature sensor. Signal missing
NA ECM-141B Outside temperature sensor. Signal missing
NA ECM-142B Outside temperature sensor. Signal missing
NA ECM-142C Outside temperature sensor. Signal too high
NA ECM-142D Outside temperature sensor. Signal too low
NA ECM-143C Outside temperature sensor. Signal too high
NA ECM-143D Outside temperature sensor. Signal too low
P0201 ECM-200B Injector cyl 1. Signal missing
P0262 ECM-200C Injector cyl 1. Signal too high
P0261 ECM-200D Injector cyl 1. Signal too low
NA ECM-2140 Long-term fuel trim, bank 1
NA ECM-214C Long-term fuel trim, bank 1
NA ECM-214D Long-term fuel trim, bank 1
P2177 ECM-21AC Long-term fuel trim load, bank1. Upper limit
P2178 ECM-21AD Long-term fuel trim load, bank1. Lower limit
P2187 ECM-21CC Long-term fuel trim, idling, bank 1. Upper limit
P2188 ECM-21CD Long-term fuel trim, idling, bank 1. Lower limit
P0137 P0141 P0143 ECM-2200 Rear heated oxygen sensor (HO2S), bank 1, heating. Faulty signal
P0140 ECM-221B Rear heated oxygen sensor (HO2S) ageing, bank 1. Signal missing
P0140 ECM-221C Rear heated oxygen sensor (HO2S) ageing, bank 1. Signal too high
P0140 ECM-221D Rear heated oxygen sensor (HO2S) ageing, bank 1. Signal too low
P2232 ECM-2220 Rear heated oxygen sensor (HO2S), bank 1. Faulty signal
P0136 ECM-222B Rear heated oxygen sensor (HO2S), bank 1. Signal missing
P0138 ECM-222C Rear heated oxygen sensor (HO2S), bank 1. Signal too high
P0137 ECM-222D Rear heated oxygen sensor (HO2S), bank 1. Signal too low
P0036 ECM-223B Rear heated oxygen sensor (HO2S), bank 1. Signal missing
P0038 ECM-223C Rear heated oxygen sensor (HO2S), bank 1. Signal too high
P0037 ECM-223D Rear heated oxygen sensor (HO2S), bank 1. Signal too low
P0053 ECM-2400 Front heated oxygen sensor (HO2S), bank 1, heating. Faulty signal
P0053 ECM-240B Front heated oxygen sensor (HO2S), bank 1, heating. Signal missing
P0053 ECM-240C Front heated oxygen sensor (HO2S), bank 1, heating. Signal too high
NA ECM-242D Front heated oxygen sensor (HO2S), bank 1. Slow regulation
P2231 ECM-243B Front heated oxygen sensor (HO2S), bank 1. Signal missing
P0135 ECM-243C Front heated oxygen sensor (HO2S). Signal too high
P0030 ECM-244B Front heated oxygen sensor (HO2S), bank 1, heating. Signal missing
P0032 ECM-244C Front heated oxygen sensor (HO2S), bank 1, heating. Signal too high
P0031 ECM-244D Front heated oxygen sensor (HO2S), bank 1, heating. Signal too low
P1646 ECM-2450 Front heated oxygen sensor (HO2S), bank 1. Faulty signal
P1646 ECM-245B Front heated oxygen sensor (HO2S), bank 1. Signal missing
P1646 ECM-245C Front heated oxygen sensor (HO2S), bank 1. Signal too high
P1646 ECM-245D Front heated oxygen sensor (HO2S), bank 1. Signal too low
P2626 ECM-246B Front heated oxygen sensor (HO2S), bank 1. Signal missing
P2238 ECM-2470 Front heated oxygen sensor (HO2S), bank 1. Faulty signal
P2237 ECM-247B Front heated oxygen sensor (HO2S), bank 1. Signal missing
P0132 ECM-248C Front heated oxygen sensor (HO2S), bank 1. Signal too high
P0131 ECM-248D Front heated oxygen sensor (HO2S), bank 1. Signal too low
P2243 ECM-249B Front heated oxygen sensor (HO2S), bank 1. Signal missing
P2251 ECM-24AB Front heated oxygen sensor (HO2S), bank 1. Signal missing
P2195 ECM-24C0 Front heated oxygen sensor (HO2S), bank 1. Faulty signal
P2196 ECM-24CB Front heated oxygen sensor (HO2S), bank 1. Signal missing
P2096 ECM-24CC Front heated oxygen sensor (HO2S), bank 1. Signal too high
P2097 ECM-24CD Front heated oxygen sensor (HO2S), bank 1. Signal too low
P2414 ECM-24D0 Front heated oxygen sensor (HO2S), bank 1. Faulty signal
NA ECM-24EB Rear heated oxygen sensor (HO2S). Slow regulation
NA ECM-24EC Rear heated oxygen sensor (HO2S). Slow regulation
NA ECM-270B Engine coolant temperature (ECT) sensor. Signal missing
P0118 ECM-273C Engine coolant temperature (ECT) sensor. Signal too high
P0117 ECM-273D Engine coolant temperature (ECT) sensor. Signal too low
P0116 ECM-2740 Engine coolant temperature (ECT) sensor. Faulty signal
P0116 ECM-274C Engine coolant temperature (ECT) sensor. Signal too high
P0116 ECM-274D Engine coolant temperature (ECT) sensor. Signal too low
P0116 ECM-275C Engine coolant temperature (ECT) sensor. Signal too high
P0116 ECM-275D Engine coolant temperature (ECT) sensor. Signal too low
P0191 ECM-2800 Fuel pressure sensor. Faulty signal
P0190 ECM-280B Fuel pressure sensor. Signal missing
P0193 ECM-280C Fuel pressure sensor. Signal too high
P0192 ECM-280D Fuel pressure sensor. Signal too low
NA ECM-281C Text message. Pressure too high
P0089 ECM-2900 Fuel pressure. Faulty signal
P0090 ECM-290B Fuel pressure. Signal missing
P0088 ECM-290C Fuel pressure. Signal too high
NA ECM-290D Fuel pressure. Signal too low
P0627 ECM-291B Fuel pump control module. Signal missing
P0629 ECM-291C Fuel pump control module. Signal too high
P0628 ECM-291D Fuel pump control module. Signal too low
NA ECM-2A00 Fuel temperature sensor. Faulty signal
NA ECM-2A0B Fuel temperature sensor. Signal missing
P0183 ECM-2A0C Fuel temperature sensor. Signal too high
P0182 ECM-2A0D Fuel temperature sensor. Signal too low
P0181 ECM-2A10 Fuel temperature sensor. Signal too high
NA ECM-2A1B Fuel temperature sensor. Signal too low
P0181 ECM-2A1C Fuel temperature sensor. Signal too high
P0181 ECM-2A1D Fuel temperature sensor. Signal too low
P0128 P0182 P0184 ECM-2B00 Thermostat. Faulty signal
P0328 ECM-303C Front knock sensor (KS). Signal too high
P0327 ECM-303D Front knock sensor (KS). Signal too low
P0333 ECM-304C Rear knock sensor (KS). Signal too high
P0332 ECM-304D Rear knock sensor (KS). Signal too low
P0324 ECM-3050 Knock control. Internal fault
P0324 ECM-3060 Knock control. Internal fault
NA ECM-3100 Misfire, at least one cylinder. Start up
P0300 ECM-310C Misfire, at least one cylinder. Catalytic converter damage
NA ECM-310D Misfire, at least one cylinder. Affects emissions
NA ECM-3110 Misfire cylinder 1. Start up
P0301 ECM-311C Misfire cylinder 1. Catalytic converter damage
P0301 ECM-311D Misfire cylinder 1. Emissions impact
P0728 ECM-3300 Engine speed (RPM) sensor. Signal missing
P0727 ECM-330B Engine speed (RPM) sensor. Signal missing
P0327 P0344 ECM-3400 Camshaft position (CMP) sensor, intake. Faulty signal
P0340 ECM-340B Camshaft position (CMP) sensor, intake. Signal missing
P0343 ECM-340C Camshaft position sensor, intake. Signal too high
P0342 ECM-340D Camshaft position sensor, intake. Signal too low
P0369 ECM-3410 Camshaft position (CMP) sensor, exhaust. Faulty signal
P0365 ECM-341B Camshaft position (CMP) sensor, exhaust. Signal missing
P0368 ECM-341C Camshaft position sensor, exhaust. Signal too high
P0367 ECM-341D Camshaft position sensor, exhaust. Signal too low
P2614 ECM-342B Camshaft position (CMP) sensor. Signal missing
P0351 ECM-360B Ignition coil cylinder 1. Signal missing
P2301 ECM-360C Ignition coil cylinder 1. Signal too high
P2300 ECM-360D Ignition coil cylinder 1. Signal too low
NA ECM-400C Three-way catalytic converter (TWC) efficiency, bank 1. Signal too high
P0496 ECM-420C Evaporative emission system (EVAP) valve. Open
P0497 ECM-420D Evaporative emission system (EVAP). Closed
P0443 ECM-421B Canister purge (CP) valve. Signal missing
P0444 ECM-421C Evaporative emission system (EVAP) valve. Signal too high
P0445 ECM-421D Evaporative emission system (EVAP) valve. Signal too low
NA ECM-430C Fuel tank system, leakage. Fuel tank filler cap missing
P240A ECM-431B Leak diagnostic unit, preheating. Signal missing
P240C ECM-431C Leak diagnostic unit, preheating. Signal too high
P240B ECM-431D Leak diagnostic unit, preheating. Signal too low
P2418 ECM-432B Leak diagnostic unit, valve. Signal missing
P2420 ECM-432C Leak diagnostic unit, preheating. Signal too high
P2419 ECM-432D Leak diagnostic unit, preheating. Signal too low
P2400 ECM-433B Leak diagnostic unit, pump. Signal missing
P2402 ECM-433C Leak diagnostic unit, pump. Signal too high
P2401 ECM-433D Leak diagnostic unit, pump. Signal too low
P0456 ECM-434C Fuel tank system, leakage. Minor leak
P2404 ECM-4360 Leak diagnostic unit. Faulty signal
P2407 ECM-436B Leak diagnostic unit. Signal missing
P2406 ECM-436C Leak diagnostic unit. Signal too high
P2405 ECM-436D Leak diagnostic unit. Signal too low
P0457 ECM-4380 Fuel tank filler cap missing. Faulty signal
P0442 ECM-439C Fuel tank system, leakage. Major leak
NA ECM-442B Fuel level sensor. Signal missing
NA ECM-442C Fuel level sensor. Signal too high
NA ECM-442D Fuel level sensor. Signal too low
NA ECM-4430 Fuel level sensor. Faulty signal
P0336 P0532 ECM-5000 Engine speed (RPM) sensor signal. Faulty signal
P0335 ECM-500B Engine speed (RPM) sensor signal. Signal missing
P0338 ECM-500C Engine speed (RPM) sensor signal. Signal too high
P0700 ECM-5100 Malfunction indicator lamp (MIL), transmission control module (TCM). Faulty signal
P0863 ECM-512B Malfunction indicator lamp (MIL) communication. Signal missing
NA ECM-5200 Air conditioning (A/C) pressure sensor. Faulty signal
P0530 ECM-520B Air conditioning (A/C) pressure sensor. Signal missing
P0533 ECM-520C Air conditioning (A/C) pressure sensor. Signal too high
P0532 ECM-520D Air conditioning (A/C) pressure sensor. Signal too low
P0500 ECM-531C Vehicle speed signal (VSS). Signal missing
P0501 ECM-5320 Vehicle speed signal (VSS). Faulty signal
NA ECM-532D Communication, central electronic module (CEM). Signal too high
P0243 ECM-600B Turbocharger (TC) control valve. Signal missing
P0246 ECM-600C Turbocharger (TC) control valve. Signal too high
P0245 ECM-600D Turbocharger (TC) control valve. Signal too low
P0234 ECM-603C Turbocharger (TC) control system. Signal too high
P0299 ECM-603D Turbocharger (TC) control system. Signal too low
P000A ECM-6110 Camshaft position control, intake. Slow
P000A ECM-611B Camshaft control, intake. Faulty
P0075 ECM-612B Camshaft reset valve, intake. Signal missing
P0077 ECM-612C Camshaft reset valve, intake. Signal too high
P0076 ECM-612D Camshaft reset valve, intake. Signal too low
P000B ECM-6140 Camshaft control, exhaust. Slow
P000B ECM-614B Camshaft control, exhaust. Faulty
P0078 ECM-616B Exhaust camshaft reset valve. Signal missing
P0080 ECM-616C Camshaft reset valve, intake. Signal too high
P0079 ECM-616D Camshaft reset valve, intake. Signal too low
P0485 ECM-620B Engine cooling fan control module. Signal missing
P0484 ECM-620C Engine cooling fan (FC) control module. Signal too high
P0480 ECM-621B Engine cooling fan (FC). Signal missing
P0692 ECM-621C Engine cooling fan (FC). Signal too high
P0691 ECM-621D Engine cooling fan (FC). Signal too low
P0494 ECM-6220 Engine cooling fan (FC). Faulty signal
P0645 ECM-630B A/C relay. Signal missing
P0647 ECM-630C A/C relay. Signal too high
P0646 ECM-630D A/C relay. Signal too low
P2281 ECM-640C Turbocharger (TC) control system. Signal too high
P2281 ECM-640D Turbocharger (TC) control system. Signal too low
P0017 ECM-673C Camshaft position, exhaust. High
P0017 ECM-673D Camshaft position, exhaust. Low
P0016 ECM-674C Camshaft position, intake. High
P0016 ECM-674D Camshaft position, intake. Low
P0669 ECM-700C Engine control module (ECM), internal fault. Signal too high
P0668 ECM-700D Engine control module (ECM), internal fault. Signal too low
P0634 ECM-7010 Engine control module (ECM), temperature. Faulty signal
P0634 ECM-7020 Engine control module (ECM), temperature. Faulty signal
P0634 U0426 ECM-7100 Immobilizer communication. Faulty signal
U0167 ECM-710B Immobilizer communication. Signal missing
P0633 ECM-710C Immobilizer Communication. Signal too high
U0326 ECM-710D Immobilizer Communication. Signal too low
U0415 ECM-7110 Immobilizer. Faulty signal
U0129 ECM-711B Immobilizer. Signal missing
U0415 ECM-711C Immobilizer. Signal too high
P0607 U0103 ECM-7300 Gear position sensor. Faulty signal
P0850 ECM-730B Gear position sensor. Signal missing
U0100 ECM-740B Communication, central electronic module (CEM). Signal missing
U0301 ECM-740C Communication, central electronic module (CEM). Signal too high
NA ECM-800C System relay. Signal too high
NA ECM-800D System relay. Signal too low
NA ECM-801B System relay. Signal missing
NA ECM-801C System relay. Signal too high
NA ECM-801D System relay. Signal too low
P0563 ECM-820C Battery voltage. Signal too high
P0562 ECM-820D Battery voltage. Signal too low
P2510 ECM-8210 System relay. Faulty signal
P0620 ECM-8300 Alternator control module (ACM). Faulty
P2502 ECM-830B Alternator control module (ACM). Faulty communication
P2504 ECM-830C Alternator control module (ACM). Faulty signal
P2503 ECM-830D Alternator control module (ACM). Signal too high
P0512 ECM-8410 Autostarting, engine speed. Signal too low
P0512 ECM-841B Autostarting, power supply. Signal too low
P0617 ECM-842C Starter motor relay. Signal too high
P0617 ECM-842D Starter motor relay. Signal too low
P0616 ECM-843B Starter motor relay. Open
P0616 ECM-843C Starter motor relay. Signal too high
P0616 ECM-843D Starter motor relay. Signal too low
P0641 ECM-8500 5 volt power supply. Faulty signal
P0652 ECM-851D 5 volt power supply. Signal too low
P0571 ECM-9000 Brake pedal sensor. Faulty signal
P0573 ECM-900C Brake pedal sensor. Signal too high
NA ECM-900D Brake pedal sensor. Signal too low
P0571 ECM-9011 Brake pedal sensor, signal via CAN. Faulty signal
P0571 ECM-901B Brake pedal sensor, signal via CAN. Signal missing
P0571 ECM-901D Brake pedal sensor, signal via CAN. Signal too low
NA ECM-9100 Clutch pedal switch. Faulty signal
NA ECM-910C Clutch pedal switch. Signal too high
NA ECM-910D Clutch pedal switch. Signal too low
P0805 ECM-9110 Clutch pedal position sensor. Faulty signal
P0805 ECM-911B Clutch pedal sensor. Signal missing
P0805 ECM-911C Clutch pedal sensor. Signal too high
NA ECM-911D Clutch pedal sensor. Signal too low
P0579 P2135 ECM-9200 Throttle position (TP) sensor. Faulty signal
P0121 P0221 ECM-9210 Electronic throttle unit, potentiometer 1. Faulty signal
P0123 ECM-921C Electronic throttle unit, potentiometer 1. Signal too high
P0122 P0222 ECM-921D Electronic throttle unit, potentiometer 1. Signal too low
P0122 ECM-9220 Electronic throttle unit, potentiometer 2. Faulty signal
P0223 ECM-922C Electronic throttle unit, potentiometer 2. Signal too high
P0223 ECM-922D Electronic throttle unit, potentiometer 2. Signal too low
P2101 ECM-9240 Engine control module (ECM). Faulty signal
P2111 ECM-925C Electronic throttle unit. Signal too high
P2111 ECM-925D Electronic throttle unit. Signal too low
P2112 ECM-926C Electronic throttle unit. Signal too high
P2112 ECM-926D Electronic throttle unit. Signal too low
P0638 ECM-9270 Throttle unit. Faulty signal
P2119 ECM-9280 Throttle unit. Faulty signal
P2108 ECM-929C Engine control module (ECM). Signal too high
P2108 ECM-929D Engine control module (ECM). Signal too low
P1124 ECM-92B0 Electronic throttle unit. Faulty signal
P1167 ECM-92CC Electronic throttle unit. Signal too high
P1167 ECM-92CD Electronic throttle unit. Signal too low
P1124 ECM-92D0 Electronic throttle unit. Faulty signal
P2109 ECM-92E0 Engine control module (ECM). Internal fault
P0579 ECM-9300 Control module communication problems. Faulty signal
P0564 ECM-930B Control module communication problems. Signal missing
P0581 P0808 ECM-930C Control module, communication problems. Signal too high
P0580 ECM-930D Control module communication problems. Signal too low
P2138 ECM-9400 Accelerator pedal (AP) position sensor, digital signal. Faulty signal
P2123 ECM-940C Accelerator pedal (AP) position sensor, digital signal. Signal too high
P2122 ECM-940D Accelerator pedal (AP) position sensor, digital signal. Signal too low
P2128 ECM-941C Accelerator pedal (AP) position sensor, analog signal. Signal too high
P2127 ECM-941D Accelerator pedal (AP) position sensor, analog signal. Signal too low
P2125 ECM-9430 Accelerator pedal (AP) position sensor, analog signal. Faulty signal
P2125 ECM-943B Accelerator pedal (AP) position sensor, analog signal. Signal missing
P2125 ECM-943C Accelerator pedal (AP) position sensor, analog signal. Signal too high
P2125 ECM-943D Accelerator pedal (AP) position sensor, analog signal. Signal too low
P0507 ECM-950C Engine control module (ECM), idle speed control. Signal too high
P0506 ECM-950D Engine control module (ECM), idle speed control. Signal too low
P2122 ECM-951C Engine control module (ECM), idle speed control. Signal too high
P0506 P0507 ECM-951D Engine control module (ECM), idle speed control. Signal too low
P2121 ECM-9700 Accelerator pedal (AP) position sensor, digital signal. Faulty signal
P2121 ECM-970B Accelerator pedal (AP) position sensor, digital signal. Signal missing
P2121 ECM-970C Accelerator pedal (AP) position sensor, digital signal. Signal too high
P2121 ECM-970D Accelerator pedal (AP) position sensor, digital signal. Signal too low
P0607 ECM-9800 Engine control module (ECM), torque signal. Internal fault
P0607 ECM-9810 Engine control module (ECM), engine speed (RPM). Internal fault
P0607 ECM-9820 Engine control module (ECM), load signal. Internal fault
P0607 ECM-9830 Engine control module (ECM). Internal fault
P0607 ECM-983C Engine control module (ECM). Internal fault
P0607 ECM-983D Engine control module (ECM). Internal fault
P0607 ECM-9840 Engine control module (ECM). Internal fault
P0607 ECM-984B Engine control module (ECM). Internal fault
P0607 ECM-985C Engine control module (ECM), fuel shut-off system. Internal fault
P0607 ECM-9860 Engine control module (ECM). Internal fault
P0604 ECM-9970 Memory fault in RAM. Faulty signal
P0605 ECM-9980 Memory fault in ROM. Faulty signal
P0606 ECM-9990 engine control module (ECM). Faulty signal
P0606 ECM-999B Engine control module (ECM). Signal missing
P0606 ECM-999D Engine control module (ECM). Signal too low
P0607 ECM-9A0B Engine control module (ECM). Internal fault
U0401 ECM-A020 Configuration fault. Signal missing
P0503 ECM-A12B Speed signal. Signal missing
P0503 ECM-A12C Speed signal. Signal too high
P0503 U0002 ECM-A130 Control module communication. Faulty signal
NA ECM-A13C Crash signal
P2610 ECM-A20B Engine control module (ECM). Signal missing
P2610 ECM-A20C Engine control module (ECM). Signal too high
U0001 ECM-E000 Control module communication. Faulty signal
NA ECM-E003 Configuration fault. Software fault
NA ECM-XXXX Unknown diagnostic trouble code (DTC) for the current control module version
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Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.

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