Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
2007 Suzuki Aerio Base, AWDFACTORY OEM SERVICE PROCEDURE
Engine Performance DTCS
ENGINE PERFORMANCE DIAGNOSTIC TROUBLE CODE (DTC) LIST
| DTC | Description | Detecting condition (DTC will set when detecting:) |
|---|---|---|
| P0101 | Mass air flow circuit range / performance problem | Poor performance of MAF sensor |
| P0102 | Mass air flow circuit low input | Low voltage |
| P0103 | Mass air flow circuit high input | High voltage |
| P0107 | Manifold absolute pressure circuit low input | Low voltage (or manifold absolute pressure sensor circuit open or shorted to ground) |
| P0108 | Manifold absolute pressure circuit high input | High voltage (or manifold absolute pressure sensor circuit shorted to power circuit) |
| P0111 | Intake air temperature circuit range / performance | Intake air temp. is high or low and temp. change is smaller than specification |
| P0112 | Intake air temperature circuit low | High temperature - low voltage (or IAT sensor circuit shorted to ground) |
| P0113 | Intake air temperature circuit high | Low temperature - high voltage (or IAT sensor circuit open) |
| P0116 | Engine coolant temperature circuit range / performance | Coolant temp. fails to reach, specified level even after driving or its variation is less than specified value. |
| P0117 | Engine coolant temperature circuit low | High temperature - low voltage (or ECT sensor circuit shorted to ground) |
| P0118 | Engine coolant temperature circuit high | Low temperature - high voltage (or ECT sensor circuit open) |
| P0121 | Throttle position sensor circuit range / performance | Poor performance of TP sensor |
| P0122 | Throttle position sensor circuit low | Low voltage (or TP sensor circuit shorted to ground) |
| P0123 | Throttle position sensor circuit high | High voltage (or TP sensor circuit open) |
| P0125 | Insufficient coolant temperature for closed loop fuel control | Coolant temp. not reaching closed loop temp. within specified time after engine start (or poor performance of ECT sensor) |
| P0128 | Coolant thermostat | Engine coolant temperature is too high or too low although specified time is passed after engine start |
| P0131 | O2 sensor circuit low voltage (Sensor-1) | Min. output voltage of HO2S-1 higher than specification |
| P0132 | O2 sensor circuit high voltage (Sensor-1) | Max. output voltage of HO2S-1 is lower or higher than specification |
| P0133 | O2 sensor circuit slow response (Sensor-1) | Response time of HO2S-1 output voltage between rich and lean is longer than specification. |
| P0134 | O2 sensor circuit no activity detected (Sensor-1) | Output voltage of HO2S-1 fails to go above specification. (or HO2S-1 circuit open or short) |
| P0135 | O2 sensor heater circuit (Sensor-1) | Electric current of heater is out of specification at heater ON. (or heater circuit open or short) |
| P0137 | O2 sensor circuit low voltage (Sensor-2) | Min. output voltage of HO2S-2 is higher than specification |
| P0138 | O2 sensor circuit high voltage (Sensor-2) | Max. output voltage of HO2S-2 is lower than specification |
| P0139 | O2 | sensor circuit slow response (Sensor-2) Shift time of HO2S-2 voltage which changes from 0.5 V to 0.2 V is longer than specified time when engine is fuel cut condition. |
| P0141 | O2 sensor heater circuit (Sensor-2) | Electric current of heater is out of specification at heater ON. (or heater circuit open or short) |
| P0171 | System too lean | Total fuel trim is larger than specification for specified time or longer. (Fuel trim toward rich side is large.) |
| P0172 | System too rich | Total fuel trim is smaller than specification for specified time or longer. (Fuel trim toward lean side is large.) |
| P0300 | Random / multiple cylinder misfire detected | Misfire of such level as to cause damage to three way catalyst. |
| P0301 | Cylinder 1 misfire detected | Misfire of such level as to deteriorate emission but not to cause damage to three way catalyst. |
| P0302 | Cylinder 2 misfire detected | |
| P0303 | Cylinder 3 misfire detected | |
| P0304 | Cylinder 4 misfire detected | |
| P0327 | Knock sensor circuit low | Knock sensor circuit shorted to ground (low voltage) |
| P0328 | Knock sensor circuit high | Knock sensor circuit open (high voltage) |
| P0335 | Crankshaft position sensor circuit | No signal during engine running |
| P0340 | Camshaft position sensor circuit | No reference signal during engine cranking or pulse number of position signal is out of specification. |
| P0401 | Exhaust gas recirculation flow insufficient detected | Insufficient EGR flow |
| P0402 | Exhaust gas recirculation flow excessive detected | Excessive EGR flow |
| P0403 | Exhaust gas recirculation control circuit | Low voltage (or EGR valve stepping motor coil circuit open) |
| P0420 | Catalyst system efficiency below threshold | Output waveforms of HO2S-1 and HO2S-2 are similar. |
| P0441 | Evaporative emission system incorrect purge flow | Incorrect purge flow |
| P0444 | Evaporative emission system purge control valve circuit open | Low voltage (or EVAP canister purge valve circuit open or shorted to ground) |
| P0445 | Evaporative emission system purge control valve circuit shorted | High voltage (or EVAP canister purge valve circuit shorted to power circuit) |
| P0449 | Evaporative emission system vent valve / solenoid circuit | Monitor signal of EVAP canister vent valve is different from command signal (circuit open or short) |
| P0456 | Evaporative emission system leak detected (very small leak) | Leakage from EVAP system exceeds specification. |
| P0461 | Fuel level sensor circuit range / performance | In spite of specified amount of fuel being consumed, fuel level signal voltage change is smaller than specification. |
| P0462 | Fuel level sensor "A" circuit low | Circuit voltage of fuel level sensor is less than voltage specification calculated from battery voltage. |
| P0463 | Fuel level sensor circuit high | High voltage |
| P0464 | Fuel level sensor circuit intermittent | Noise level of signal is out of specification |
| P0480 | Cooling fan 1 control circuit | Monitor signal of radiator cooling fan relay is different from command signal. |
| P0481 | Cooling fan 2 control circuit | Monitor signal of A/C condenser fan relay is different from command signal. |
| P0500 | Vehicle speed sensor | No signal during fuel cut for specified time or longer |
| P0505 | Idle air control system | Voltage is out of specification for longer than specified time |
| P0506 | Idle air control system RPM lower than expected | Engine idle speed is lower than target speed out of specified value for longer than specified time |
| P0507 | Idle air control system RPM higher than expected | Engine idle speed is higher than target speed out of specified value for longer than specified time |
| P0601 | Internal control module memory check sum error | Data write error or check sum error |
| P0607 | Control module performance | Internal processor error |
| P0616 | Starter relay circuit low | Engine starts with no starter signal. |
| P0617 | Starter relay circuit high | Starter signal inputs during long period after engine start. |
| P0630 | VIN not programmed or incompatible - ECM | VIN data is not registered or inconsistent registration code. |
Factory Service Tools
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When to See a Mechanic
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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