2007 Scion tC Base, AutomaticFACTORY OEM SERVICE PROCEDURE

Diagnostic Trouble Code Chart

HINT:

Parameters listed in the chart may not be exactly the same as your readings due to the type of instrument or other factors. If a DTC is displayed, check the trouble area for the DTC listed in the table below. For details of each DTC.

DIAGNOSTIC TROUBLE CODE CHART

DTC Code Detection Item Trouble Area MIL Memory
P0010  Camshaft Position "A" Actuator Circuit (Bank 1)
  1. Open or short in Oil Control Valve circuit
  2. Oil control valve
  3. ECM
 Comes on DTC stored
P011  Camshaft Position "A" - Timing Over-Advanced or System Performance (Bank 1)
  1. Valve timing
  2. Oil control valve (OCV)
  3. OCV filter
  4. Camshaft timing gear assembly
  5. ECM
 Comes on DTC stored
P0012  Camshaft Position "A" - Timing Over-Retarded (Bank 1) Same as DTC P0011 Comes on DTC stored
P0016  Crankshaft Position - Camshaft Position Correlation (Bank 1 Sensor A)
  1. Mechanical system (Timing chain has jumped tooth or chain stretched)
  2. ECM
 Comes on DTC stored
P0031  Oxygen Sensor Heater Control Circuit Low (Bank 1 Sensor 1)
  1. Open in Air-Fuel Ratio (A/F) sensor heater circuit
  2. A/F sensor heater
  3. EFI relay
  4. ECM
 Comes on DTC stored
P0032  Oxygen Sensor Heater Control Circuit High (Bank 1 Sensor 1)
  1. Short in A/F sensor heater circuit
  2. A/F sensor heater
  3. EFI relay
  4. ECM
 Comes on DTC stored
P0037  Oxygen Sensor Heater Control Circuit Low (Bank 1 Sensor 2)
  1. Open in Heated Oxygen (HO2) sensor heater circuit
  2. HO2 sensor heater
  3. EFI relay
  4. ECM
 Comes on DTC stored
P0038  Oxygen Sensor Heater Control Circuit High (Bank 1 Sensor 2)
  1. Short in HO2 sensor heater circuit
  2. HO2 sensor heater
  3. EFI relay
  4. ECM
 Comes on DTC stored
P0100  Mass or Volume Air Flow Circuit
  1. Open or short in Mass Air Flow (MAF) meter circuit
  2. MAF meter
  3. ECM
 Comes on DTC stored
P0101  Mass or Volume Air Flow Circuit Range / Performance Problem MAF meter Comes on DTC stored
P0102  Mass or Volume Air Flow Circuit Low Input
  1. Open in MAF meter circuit
  2. MAF meter
  3. ECM
 Comes on DTC stored
P0103  Mass or Volume Air Flow Circuit High Input
  1. Short in MAF meter circuit
  2. MAF meter
  3. ECM
 Comes on DTC stored
P0110  Intake Air Temperature Circuit
  1. Open or short in Intake Air Temperature (IAT) sensor circuit
  2. IAT sensor (built into MAF meter)
  3. ECM
 Comes on DTC stored
P0111  Intake Air Temperature Sensor Gradient Too High Mass air flow meter Comes on DTC stored
P0112  Intake Air Temperature Circuit Low Input
  1. Short in IAT sensor circuit
  2. IAT sensor (built into MAF meter)
  3. ECM
 Comes on DTC stored
P0113  Intake Air Temperature Circuit High Input
  1. Open in IAT sensor circuit
  2. IAT sensor (built into MAF meter)
  3. ECM
 Comes on DTC stored
P0115  Engine Coolant Temperature Circuit
  1. Open or short in Engine Coolant Temperature (ECT) sensor circuit
  2. ECT sensor
  3. ECM
 Comes on DTC stored
P0116  Engine Coolant Temperature Circuit Range / Performance Problem ECT sensor Comes on DTC stored
P0117  Engine Coolant Temperature Circuit Low Input
  1. Short in ECT sensor circuit
  2. ECT sensor
  3. ECM
 Comes on DTC stored
P0118  Engine Coolant Temperature Circuit High Input
  1. Open in ECT sensor circuit
  2. ECT sensor
  3. ECM
 Comes on DTC stored
P0120  Throttle / Pedal Position Sensor / Switch "A" Circuit
  1. Throttle Position (TP) sensor (built into throttle body)
  2. ECM
 Comes on DTC stored
P0121  Throttle / Pedal Position Sensor / Switch "A" Circuit Range / Performance Problem TP sensor (built into throttle body) Comes on DTC stored
P0122  Throttle / Pedal Position Sensor / Switch "A" Circuit Low Input
  1. TP sensor (built into throttle body)
  2. Short in VTA1 circuit
  3. Open in VC circuit
  4. ECM
 Comes on DTC stored
P0123  Throttle / Pedal Position Sensor / Switch "A" Circuit High Input
  1. TP sensor (built into throttle body)
  2. Open in VTA1 circuit
  3. Open in E2 circuit
  4. Short between VC and VTA1 circuit
  5. ECM
 Comes on DTC stored
P0125  Insufficient Coolant Temperature for Closed Loop Fuel Control
  1. Cooling system
  2. ECT sensor
  3. Thermostat
 Comes on DTC stored
P0128  Coolant Thermostat (Coolant Temperature Below Thermostat Regulating Temperature)
  1. Thermostat
  2. Cooling system
  3. ECT sensor
  4. ECM
 Comes on DTC stored
P0136  Oxygen Sensor Circuit Malfunction (Bank 1 Sensor 2)
  1. Open or short in heated oxygen (HO2) sensor (sensor 2) circuit
  2. Heated oxygen sensor (sensor 2)
  3. Heated oxygen sensor heater (sensor 2)
  4. A/F sensor (sensor 1)
  5. EFI relay
  6. Gas leakage from exhaust system
 Comes on DTC stored
P0137  Oxygen Sensor Circuit Low Voltage (Bank 1 Sensor 2)
  1. Open in HO2 sensor(sensor 2) circuit
  2. Heated oxygen sensor(sensor 2)
  3. Heated oxygen sensor heater (sensor 2)
  4. EFI relay 5.
  5. Gas leakage from exhaust system
 Comes on DTC stored
P0138  Oxygen Sensor Circuit High Voltage (Bank 1 Sensor 2)
  1. Short in heated oxygen sensor (sensor 2) circuit
  2. Short in heated oxygen sensor
  3. ECM internal circuit malfunction
 Comes on DTC stored
P0141  Oxygen Sensor Heater Circuit Malfunction (Bank 1 Sensor 2)
  1. Open or short in HO2 sensor heater circuit
  2. HO2 sensor heater (sensor 2)
  3. EFI relay
  4. ECM
 Comes on DTC stored
P0171  System Too Lean (Bank1)
  1. Air induction system
  2. Injector blockage
  3. MAF meter
  4. ECT sensor
  5. Fuel pressure
  6. Gas leakage from exhaust system
  7. Open or short in A/ F sensor(sensor 1) circuit
  8. A/F sensor (sensor 1)
  9. A/F sensor heater (sensor 1)
  10. EFI relay
  11. A/F sensor heater and EFI relay circuits
  12. PCV hose connections
  13. PCV valve and hose
  14. ECM
 Comes on DTC stored
P0172  System Too Rich (Bank1)
  1. Injector leakage or blockage
  2. MAF meter
  3. ECT sensor
  4. Ignition system
  5. Fuel pressure
  6. Gas leakage from exhaust system
  7. Open or short in A/ F sensor(sensor 1) circuit
  8. A/F sensor (sensor 1)
  9. A/F sensor heater (sensor 1)
  10. EFI relay
  11. A/F sensor heater and EFI relay circuits
  12. ECM
 Comes on DTC stored
P0220  Throttle / Pedal Position Sensor / Switch "B" Circuit
  1. TP sensor (built into throttle body)
  2. ECM
 Comes on DTC stored
P0222  Throttle / Pedal Position Sensor / Switch "B" Circuit Low Input
  1. TP sensor (built into throttle body)
  2. Short in VTA2 circuit
  3. Open in VC circuit
  4. ECM
 Comes on DTC stored
P0223  Throttle / Pedal Position Sensor / Switch "B" Circuit High Input
  1. TP sensor (built into throttle body)
  2. Open in VTA2 circuit
  3. Open in E2 circuit
  4. Short between VC and VTA2 circuit
  5. ECM
 Comes on DTC stored
P0300  Random / Multiple Cylinder Misfire Detected
  1. Open or short in engine wire harness
  2. Connector connections
  3. Vacuum hose connections
  4. Ignition system
  5. Injector
  6. Fuel pressure
  7. MAF meter
  8. ECT sensor
  9. Compression pressure
  10. Valve clearance
  11. Valve timing
  12. PCV hose connections
  13. PCV valve and hose
  14. ECM
 Comes on DTC stored
P0301  Cylinder 1 Misfire Detected Same as DTC P0300 Blinks DTC stored
P0302  Cylinder 2 Misfire Detected Same as DTC P0300 Blinks DTC stored
P0303  Cylinder 3 Misfire Detected Same as DTC P0300 Blinks DTC stored
P0304  Cylinder 4 Misfire Detected Same as DTC P0300 Blinks DTC stored
P0327  Knock Sensor 1 Circuit Low Input (Bank 1 or Single Sensor)
  1. Short in knock sensor circuit
  2. Knock sensor
  3. ECM
 Comes on DTC stored
P0328  Knock Sensor 1 Circuit High Input (Bank 1 or Single Sensor)
  1. Open in knock sensor circuit
  2. Knock sensor
  3. ECM
 Comes on DTC stored
P0335  Crankshaft Position Sensor "A" Circuit
  1. Open or short in Crankshaft Position (CKP) sensor circuit
  2. CKP sensor
  3. Sensor plate (CKP sensor plate)
  4. ECM
 Comes on DTC stored
P0339  Crankshaft Position Sensor "A" Circuit Intermittent Same as DTC P0335 - DTC stored
P0340  Camshaft Position Sensor "A" Circuit (Bank 1 or Single Sensor)
  1. Open or short in Camshaft Position (CMP) sensor circuit
  2. CMP sensor
  3. Camshaft
  4. Timing chain has jumped tooth
  5. ECM
 Comes on DTC stored
P0351  Ignition Coil "A" Primary / Secondary Circuit
  1. Ignition system
  2. Open or short in IGF1 or IGT circuit (1 to 4) between ignition coil and ECM
  3. No. 1 to No. 4 ignition coil with igniters
  4. ECM
 Comes on DTC stored
P0352  Ignition Coil "B" Primary / Secondary Circuit Same as DTC P0351 Comes on DTC stored
P0353  Ignition Coil "C" Primary / Secondary Circuit Same as DTC P0351 Comes on DTC stored
P0354  Ignition Coil "D" Primary / Secondary Circuit Same as DTC P0351 Comes on DTC stored
P0420  Catalyst System Efficiency Below Threshold (Bank 1)
  1. Gas leakage from exhaust system
  2. A/F sensor (sensor 1)
  3. Heated oxygen sensor(sensor 2)
  4. Front exhaust pipe (TWC)
 Comes on DTC stored
P043E  Evaporative Emission System Reference Orifice Clog Up
  1. Canister pump module
  2. Connector/Wire harness (Canister pump module - ECM)
  3. ECM
 Comes on DTC stored
P043F  Evaporative Emission System Reference Orifice High Flow
  1. Canister pump module
  2. Connector/Wire harness (Canister pump module - ECM)
  3. ECM
 Comes on DTC stored
P0441  Evaporative Emission Control System Incorrect Purge Flow
  1. Purge VSV
  2. Connector/Wire harness (purge VSV-ECM)
  3. ECM
  4. Canister pump module
  5. Leakage from EVAP system
 Comes on DTC stored
P0450  Evaporative Emission Control System Pressure Sensor / Switch
  1. Canister pump module
  2. ECM
 Comes on DTC stored
P0451  Evaporative Emission Control System Pressure Sensor Range / Performance
  1. Canister pump module
  2. Connector/Wire harness (between canister pump module and ECM)
  3. ECM
 Comes on DTC stored
P0452  Evaporative Emission Control System Pressure Sensor / Switch Low Input
  1. Canister pump module
  2. Connector/Wire harness (between canister pump module and ECM)
  3. ECM
 Comes on DTC stored
P0453  Evaporative Emission Control System Pressure Sensor / Switch High Input
  1. Canister pump module
  2. Connector/Wire harness (between canister pump module and ECM)
  3. ECM
 Comes on DTC stored
P0455  Evaporative Emission Control System Leak Detected (Gross Leak)
  1. Fuel tank cap (loose)
  2. Leakage from EVAP line (between canister and fuel tank)
  3. Leakage from EVAP line (between purge VSV and canister)
  4. Canister pump module
  5. Leakage from fuel tank
  6. Leakage from canister
 Comes on DTC stored
P0456  Evaporative Emission Control System Leak Detected (Very Small Leak) Same as DTC P0455 Comes on DTC stored
P0500  Vehicle Speed Sensor "A"
  1. Open or short in vehicle speed sensor circuit
  2. Vehicle speed sensor
  3. Combination meter
  4. ECM
  5. Skid control ECU
 Comes on DTC stored
P0504  Brake Switch "A" / "B" Correlation
  1. Short in stop light switch signal circuit
  2. STOP fuse
  3. Stop light switch
  4. ECM
 - DTC stored
P0505  Idle Control System Malfunction
  1. ETCS (Electronic Throttle Control System)
  2. Air induction system
  3. PCV hose connections
  4. ECM
 Comes on DTC stored
P050A  Cold Start Idle Air Control System Performance
  1. Throttle body assembly
  2. MAF meter
  3. Air induction system
  4. PCV hose connections
  5. VVT system
  6. Air cleaner filter element
  7. ECM
 Comes on DTC stored
P050B  Cold Start Ignition Timing Performance Same as DTC P050A Comes on DTC stored
P0560  System Voltage
  1. Open in backup power source circuit
  2. EFI fuse
  3. ECM
 Comes on DTC stored
P0604  Internal Control Module Random Access Memory (RAM) Error ECM Comes on DTC stored
P0606  ECM/PCM Processor ECM Comes on DTC stored
P0607  Control Module Performance ECM Comes on DTC stored
P0617  Starter Relay Circuit High
  1. PNP switch (A/T)
  2. Clutch start switch (MIT)
  3. Starter relay circuit
  4. Ignition switch
  5. ECM
 Comes on DTC stored
P0630  VIN not Programmed or Mismatch - ECM / PCM ECM Comes on DTC stored
P0657  Actuator Supply Voltage Circuit / Open ECM Comes on DTC stored
P0724  Brake Switch "B" Circuit High
  1. Short in stop light switch signal circuit
  2. Stop light switch
  3. ECM
 Comes on DTC stored
P2102  Throttle Actuator Control Motor Circuit Low
  1. Open in throttle actuator circuit
  2. Throttle actuator
  3. ECM
 Comes on DTC stored
P2103  Throttle Actuator Control Motor Circuit High
  1. Short in throttle actuator circuit
  2. Throttle actuator
  3. Throttle valve
  4. Throttle body assembly
  5. ECM
 Comes on DTC stored
P2111  Throttle Actuator Control System -Stuck Open
  1. Throttle actuator
  2. Throttle body assembly
  3. Throttle valve
 Comes on DTC stored
P2112  Throttle Actuator Control System -Stuck Closed Same as DTC P2111 Comes on DTC stored
P2118  Throttle Actuator Control Motor Current Range / Performance
  1. Open in ETCS power source circuit
  2. ETCS fuse
  3. ECM
 Comes on DTC stored
P2119  Throttle Actuator Control Throttle Body Range / Performance
  1. ETCS
  2. ECM
 Comes on DTC stored
P2120  Throttle / Pedal Position Sensor / Switch "D" Circuit
  1. Accelerator Pedal Position (APP) sensor
  2. ECM
 Comes on DTC stored
P2121  Throttle / Pedal Position Sensor / Switch "D" Circuit Range / Performance
  1. APP sensor
  2. ECM
 Comes on DTC stored
P2122  Throttle / Pedal Position Sensor / Switch "D" Circuit Low Input
  1. APP sensor
  2. Open in VCP1 circuit
  3. Open or ground short VPA1 circuit
  4. ECM
 Comes on DTC stored
P2123  Throttle / Pedal Position Sensor / Switch "D" Circuit High Input
  1. APP sensor
  2. Open in EPA circuit
  3. ECM
 Comes on DTC stored
P2125  Throttle / Pedal Position Sensor / Switch "E" Circuit
  1. APP sensor
  2. ECM
 Comes on DTC stored
P2127  Throttle / Pedal Position Sensor / Switch "E" Circuit Low Input
  1. APP sensor
  2. Open in VCP2 circuit
  3. Open or ground short VPA2 circuit
  4. ECM
 Comes on DTC stored
P2128  Throttle / Pedal Position Sensor / Switch "E" Circuit High Input
  1. APP sensor
  2. Open in EPA2 circuit
  3. ECM
 Comes on DTC stored
P2135  Throttle / Pedal Position Sensor / Switch "A" / "B" Voltage Correlation
  1. Short between VTA1 and VTA2 circuits
  2. TP sensor (built into throttle body)
  3. ECM
 Comes on DTC stored
P2138  Throttle / Pedal Position Sensor / Switch "D" / "E" Voltage Correlation
  1. Short between VPA1 and VPA2 circuits
  2. APP sensor
  3. ECM
 Comes on DTC stored
P2195  Oxygen (A/F) Sensor Signal Stuck Lean (Bank 1 Sensor 1)
  1. Open or short in A/ F sensor(sensor 1) circuit
  2. A/F sensor (sensor D
  3. A/F sensor heater (sensor 1)
  4. EFI relay
  5. A/F sensor heater and relay circuits
  6. Air induction system
  7. Fuel pressure
  8. Injector
  9. ECM
 Comes on DTC stored
P2196  Oxygen (A/F) Sensor Signal Stuck Rich (Bank 1 Sensor 1) Same as DTC P2195 Comes on DTC stored
P2237  Oxygen (A/F) Sensor Pumping Current Circuit / Open (Bank 1 Sensor 1)
  1. Open or short in A/ F sensor(sensor 1) circuit
  2. A/F sensor (sensor 1)
  3. ECM
 Comes on DTC stored
P2238  Oxygen (A/F) Sensor Pumping Current Circuit Low (Bank 1 Sensor 1) Same as DTC P2237 Comes on DTC stored
P2239  Oxygen (A/F) Sensor Pumping Current Circuit High (Bank 1 Sensor 1) Same as DTC P2237 Comes on DTC stored
P2252  Oxygen (A/F) Sensor Reference Ground Circuit Low (Bank 1 Sensor 1) Same as DTC P2237 Comes on DTC stored
P2253  Oxygen (A/F) Sensor Reference Ground Circuit High (Bank 1 Sensor 1) Same as DTC P2237 Comes on DTC stored
P2401  Evaporative Emission System Leak Detection Pump Control Circuit Low
  1. Canister pump module
  2. Connector/Wire harness (between canister pump module and ECM)
  3. ECM
 Comes on DTC stored
P2402  Evaporative Emission System Leak Detection Pump Control Circuit High
  1. Canister pump module
  2. Connector/Wire harness (between canister pump module and ECM)
  3. ECM
 Comes on DTC stored
P2419  Evaporative Emission System Switching Valve Control Circuit Low
  1. Canister pump module
  2. Connector/Wire harness (between canister pump module and ECM)
  3. ECM
 Comes on DTC stored
P2420  Evaporative Emission System Switching Valve Control Circuit High
  1. Canister pump module
  2. Connector/Wire harness (between canister pump module and ECM)
  3. ECM
 Comes on DTC stored
P2610  ECM / PCM Internal Engine Off Timer Performance ECM Comes on DTC stored
P2A00  A/F Sensor Circuit Slow Response (Bank 1 Sensor 1)
  1. Open or short in A/ F sensor(sensor 1) circuit
  2. A/F sensor (sensor D
  3. A/F sensor heater
  4. EFI relay
  5. A/F sensor heater and EFI relay circuits
  6. Air induction system
  7. Fuel pressure
  8. Injector
  9. PCV valve and hose
  10. PCV hose connections
  11. ECM
 Comes on DTC stored
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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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