SFI SYSTEM (w/ Electronic Throttle Control System) DIAGNOSTIC TROUBLE CODE CHART

Tech Tips

Parameters listed in the chart may be different from your readings depending on the type of instruments and other factors.

If any DTCs are displayed during a check mode, check the circuit for the DTCs listed in the below. For details of each DTC, refer to the page indicated.

SFI System
DTC Code Detection Item Trouble Area MIL Memory See page
P0010 Camshaft Position "A" Actuator Circuit (Bank 1)

- Open or short in camshaft timing oil control valve circuit

- Camshaft timing oil control valve (OCV)

- ECM

Comes on DTC stored

Click here

P0011 Camshaft Position "A" - Timing Over-Advanced or System Performance (Bank 1)

- Valve timing

- Camshaft timing oil control valve (OCV)

- Camshaft timing sprocket assembly

- Camshaft timing oil control valve (OCV) circuit

- ECM

Comes on DTC stored

Click here

P0012 Camshaft Position "A" - Timing Over-Retarded (Bank 1)

- Valve timing

- Camshaft timing oil control valve (OCV)

- Camshaft timing sprocket assembly

- Camshaft timing oil control valve (OCV) circuit

- ECM

Comes on DTC stored

Click here

P0106 Manifold Absolute Pressure / Barometric Pressure Circuit Range / Performance Problem

- Air induction system

- Manifold absolute pressure sensor

Comes on DTC stored

Click here

P0107 Manifold Absolute Pressure / Barometric Pressure Circuit Low Input

- Open or short in manifold absolute pressure sensor circuit

- Manifold absolute pressure sensor

- ECM

Comes on DTC stored

Click here

P0108 Manifold Absolute Pressure / Barometric Pressure Circuit High Input

- Open or short in manifold absolute pressure sensor circuit

- Manifold absolute pressure sensor

- ECM

Comes on DTC stored

Click here

P0112 Intake Air Temperature Circuit Low Input

- Open or short in intake air temperature sensor circuit

- Short to power source circuit

- Intake air temperature sensor (built into manifold absolute pressure sensor)

- ECM

Comes on DTC stored

Click here

P0113 Intake Air Temperature Circuit High Input

- Short in intake air temperature sensor circuit

- Intake air temperature sensor (built into manifold absolute pressure sensor)

- ECM

Comes on DTC stored

Click here

P0117 Engine Coolant Temperature Circuit Low Input

- Open in engine coolant temperature sensor circuit

- Short to power source circuit

- Engine coolant temperature sensor

- ECM

Comes on DTC stored

Click here

P0118 Engine Coolant Temperature Circuit High Input

- Short in engine coolant temperature sensor circuit

- Engine coolant temperature sensor

- ECM

Comes on DTC stored

Click here

P0121 Throttle / Pedal Position Sensor / Switch "A" Circuit Range / Performance Problem

- Throttle Position (TP) sensor (built into throttle body assembly)

- ECM

Comes on DTC stored

Click here

P0122 Throttle / Pedal Position Sensor / Switch "A" Circuit Low Input

-TP sensor (built into throttle body assembly)

- Open or short in VTA1 circuit

- Open in VC circuit

- ECM

Comes on DTC stored

Click here

P0123 Throttle / Pedal Position Sensor / Switch "A" Circuit High Input

- TP sensor (built into throttle body assembly)

- Open in VTA1 circuit

- Open in E2 circuit

- Short between VC and VTA1 circuits

- ECM

Comes on DTC stored

Click here

P0125 Insufficient Coolant Temperature for Closed Loop Fuel Control

- Engine coolant temperature sensor

- Thermostat

- Cooling system

Comes on DTC stored

Click here

P0130 Oxygen (A/F) Sensor Circuit (Bank 1 Sensor 1)

- Short to GND in heated oxygen sensor (sensor 1) circuit

- Heated oxygen sensor (sensor 1)

- ECM

Comes on DTC stored

Click here

P0132 Oxygen Sensor Circuit High Voltage Bank1 Sensor1

- Short in signal output circuit and power source circuit of heated oxygen sensor (sensor 1)

- Heated oxygen sensor (sensor 1)

- ECM

Comes on DTC stored

Click here

P0133 Oxygen (A/F) Sensor Circuit Slow Response (Bank 1 Sensor 1)

- Open or short in heated oxygen sensor circuit

- Heated oxygen sensor (sensor 1)

- Fuel pressure

- Injector

- Gas leakage from exhaust system

- ECM

Comes on DTC stored

Click here

P0134 Oxygen (A/F) Sensor Circuit No Activity Detected (Bank 1 Sensor 1)

- Open or short in heated oxygen sensor (sensor 1) circuit

- Heated oxygen sensor (sensor 1)

- ECM

Comes on DTC stored

Click here

P0135 Oxygen (A/F) Sensor Heater Circuit (Bank 1 Sensor 1)

- Open or short in heated oxygen sensor (sensor 1) heater circuit

- Heated oxygen sensor heater (sensor 1)

- EFI main relay

- ECM

Comes on DTC stored

Click here

P0136 Oxygen Sensor Circuit Malfunction (Bank 1 Sensor 2)

- Short to GND in heated oxygen sensor (sensor 2) circuit

- Heated oxygen sensor (sensor 2)

- Heated oxygen sensor heater (sensor 2)

- EFI main relay

Comes on DTC stored

Click here

P0138 Oxygen Sensor Circuit High Voltage (Bank 1 Sensor 2)

- Short in signal output circuit and power source circuit of heated oxygen sensor (sensor 2)

- Heated oxygen sensor (sensor 2)

- ECM

Comes on DTC stored

Click here

P0139 Oxygen Sensor Circuit Slow Response (Bank 1 Sensor 2)

- Open or short in heated oxygen sensor (sensor 2)

- Heated oxygen sensor (sensor 2)

- Fuel pressure

- Injector

- Gas leakage from exhaust system

- ECM

Comes on DTC stored

Click here

P0140 Heated Oxygen Sensor Circuit No Activity Detected (Bank 1 Sensor 2)

- Open in heated oxygen sensor (sensor 2) circuit

- Heated oxygen sensor (sensor 2)

- Heated oxygen sensor heater (sensor 2)

- EFI main relay

Comes on DTC stored

Click here

P0141 Oxygen Sensor Heater Circuit Malfunction (Bank 1 Sensor 2)

- Open in heated oxygen sensor (sensor 2) heater circuit

- Heated oxygen sensor heater (sensor 2)

- EFI main relay

- ECM

Comes on DTC stored

Click here

P0171 System Too Lean (Bank 1)

- Injector blockage

- Manifold absolute pressure sensor

- Engine coolant temperature sensor

- Fuel pressure

- Gas leakage from exhaust system

- Open or short in heated oxygen sensor (sensor 1) circuit

- Heated oxygen sensor (sensor 1)

- ECM

Comes on DTC stored

Click here

P0172 System Too Rich (Bank 1)

- Injector blockage

- Manifold absolute pressure sensor

- Engine coolant temperature sensor

- Fuel pressure

- Gas leakage from exhaust system

- Open or short in heated oxygen sensor (sensor 1) circuit

- Heated oxygen sensor (sensor 1)

- ECM

Comes on DTC stored

Click here

P0221 Throttle / Pedal Position Sensor / Switch "B" Circuit Range / Performance Problem

- TP sensor (built into throttle body assembly)

- ECM

Comes on DTC stored

Click here

P0222 Throttle / Pedal Position Sensor / Switch "B" Circuit Low Input

- TP sensor (built into throttle body assembly)

- Open or short in VTA2 circuit

- Open in VC circuit

- ECM

Comes on DTC stored

Click here

P0223 Throttle / Pedal Position Sensor / Switch "B" Circuit High Input

- TP sensor (built into throttle body assembly)

- Open in VTA2 circuit

- Open in E2 circuit

- Short between VC and VTA2 circuits

- ECM

Comes on DTC stored

Click here

P0261 Cylinder 1 Injector Circuit Low

- Open or short to GND in injector circuit

- Injector

- ECM

Comes on DTC stored

Click here

P0262 Cylinder 1 Injector Circuit High

- Short in injector power source circuit

- Injector

- ECM

Comes on DTC stored

Click here

P0264 Cylinder 2 Injector Circuit Low

- Open or short to GND in injector circuit

- Injector

- ECM

Comes on DTC stored

Click here

P0265 Cylinder 2 Injector Circuit High

- Short in injector power source circuit

- Injector

- ECM

Comes on DTC stored

Click here

P0267 Cylinder 3 Injector Circuit Low

- Open or short to GND in injector circuit

- Injector

- ECM

Comes on DTC stored

Click here

P0268 Cylinder 3 Injector Circuit High

- Short in injector power source circuit

- Injector

- ECM

Comes on DTC stored

Click here

P0300 Random / Multiple Cylinder Misfire Detected

- Open or short in engine wire harness

- Connector connection

- Ignition system

- Injector

- Fuel pressure

- Manifold absolute pressure sensor

- Engine coolant temperature sensor

- Compression pressure

- Valve clearance

- Valve timing

- PCV hose

- Air induction system

- ECM

Comes on DTC stored

Click here

P0301 Cylinder 1 Misfire Detected

- Open or short in engine wire harness

- Connector connection

- Ignition system

- Injector

- Fuel pressure

- Manifold absolute pressure sensor

- Engine coolant temperature sensor

- Compression pressure

- Valve clearance

- Valve timing

- PCV hose

- Air induction system

- ECM

Comes on DTC stored

Click here

P0302 Cylinder 2 Misfire Detected

- Open or short in engine wire harness

- Connector connection

- Ignition system

- Injector

- Fuel pressure

- Manifold absolute pressure sensor

- Engine coolant temperature sensor

- Compression pressure

- Valve clearance

- Valve timing

- PCV hose

- Air induction system

- ECM

Comes on DTC stored

Click here

P0303 Cylinder 3 Misfire Detected

- Open or short in engine wire harness

- Connector connection

- Ignition system

- Injector

- Fuel pressure

- Manifold absolute pressure sensor

- Engine coolant temperature sensor

- Compression pressure

- Valve clearance

- Valve timing

- PCV hose

- Air induction system

- ECM

Comes on DTC stored

Click here

P0327 Knock Sensor 1 Circuit Low Input (Bank 1 or Single Sensor)

- Open or short in knock sensor circuit

- Knock sensor

- Knock sensor looseness

- ECM

Comes on DTC stored

Click here

P0335 Crankshaft Position Sensor "A" Circuit

- Open or short in crankshaft position sensor circuit

- Crankshaft position sensor

- Crankshaft (sensor plate)

- ECM

Comes on DTC stored

Click here

P0336 Crankshaft Position Sensor "A" Circuit Range / Performance

- Open or short in crankshaft position sensor

circuit

- Crankshaft position sensor

- Crankshaft (sensor plate)

- ECM

Comes on DTC stored

Click here

P0340 Camshaft Position Sensor "A" Circuit (Bank 1 or Single Sensor)

- Mechanical system malfunction (jumped teeth of timing chain, chain stretched)

- ECM

Comes on DTC stored

Click here

P0341 Camshaft Position Sensor "A" Circuit Range / Performance (Bank 1 or Single Sensor)

- Open or short in camshaft position sensor circuit

- Camshaft position sensor

- Intake camshaft

- ECM

Comes on DTC stored

Click here

P0342 Camshaft Position Sensor Circuit Low Input

- Short in camshaft position sensor circuit

- Camshaft position sensor

- Intake camshaft

- ECM

Comes on DTC stored

Click here

P0343 Camshaft Position Sensor Circuit High Input

- Open in camshaft position sensor circuit

- Short in power source circuit

- Camshaft position sensor

- Intake camshaft

- ECM

Comes on DTC stored

Click here

P0420 Catalyst System Efficiency Below Threshold (Bank 1)

- Gas leakage from exhaust system

- Heated oxygen sensor (sensor 1)

- Heated oxygen sensor (sensor 2)

- TWC

Comes on DTC stored

Click here

P0443 Evaporative Emission Control System Purge Control Valve Circuit Malfunction

- Open or short in purge VSV circuit

- Purge VSV

- ECM

Comes on DTC stored

Click here

P0501 Vehicle Speed Sensor Range / Performance

- Open or short in speed sensor circuit

- Speed sensor

- Skid control ECU

- ECM

Comes on DTC stored

Click here

P0561 System Voltage Unstable - ECM Comes on DTC stored

Click here

P0562 System Voltage Low

- Open or short in backup power source circuit

- Tired battery

- Electrical over work

- Generator

- ECM

Comes on DTC stored

Click here

P0563 System Voltage High

- Generator

- Battery (if 24 V battery is installed, DTC P0563 is output)

- ECM

Comes on DTC stored

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P0571 Brake Switch "A" Circuit

- Short in stop light switch signal circuit

- Stop light switch

- ECM

Comes on DTC stored

Click here

P0603 Internal Control Module Keep Alive Memory (KAM) Error - ECM Comes on DTC stored

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P0604 Internal Control Module Random Access Memory (RAM) Error - ECM Comes on DTC stored

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P0605 Internal Control Module Read Only Memory (ROM) Error - ECM Comes on DTC stored

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P0606 ECM / PCM Processor - ECM Comes on DTC stored

Click here

P0704 Clutch Switch Input Circuit Malfunction

- Open or short in clutch switch circuit

- Clutch switch assembly

- ECM

Does not come on DTC stored

Click here

P1127 Condition for ETCS initialization - Comes on DTC stored

Click here

P2101 Throttle Actuator Control Motor Circuit Range/Performance - ECM Comes on DTC stored

Click here

P2102 Throttle Actuator Control Motor Circuit Low

- Open in throttle control motor circuit

- Throttle body assembly

Comes on DTC stored

Click here

P2103 Throttle Actuator Control Motor Circuit High

- Short in throttle control motor circuit

- Throttle body assembly

Comes on DTC stored

Click here

P2109 Throttle / Pedal Position Sensor "A" Minimum Stop Performance - Throttle body assembly Comes on DTC stored

Click here

P2111 Throttle Actuator Control System - Stuck Open

- Open or short in throttle control motor circuit

- Throttle body assembly

Comes on DTC stored

Click here

P2112 Throttle Actuator Control System - Stuck Closed

- Open or short in throttle motor circuit

- Throttle body assembly

Comes on DTC stored

Click here

P2118 Throttle Actuator Control Motor Current Range / Performance - Throttle body assembly Comes on DTC stored

Click here

P2119 Throttle Actuator Control Throttle Body Range / Performance - Throttle body assembly Comes on DTC stored

Click here

P2122 Throttle / Pedal Position Sensor / Switch "D" Circuit Low Input

- Accelerator pedal position sensor

- Open in VCPA circuit

- VPA circuit open or ground short

- Accelerator pedal

- ECM

Comes on DTC stored

Click here

P2123 Throttle / Pedal Position Sensor / Switch "D" Circuit High Input

- Accelerator pedal position sensor

- Open in EPA circuit

- Short in VCPA circuit

- Accelerator pedal

- ECM

Comes on DTC stored

Click here

P2127 Throttle / Pedal Position Sensor / Switch "E" Circuit Low Input

- Accelerator pedal position sensor

- Open in VCP2 circuit

- VPA2 circuit open or ground short

- Accelerator pedal

- ECM

Comes on DTC stored

Click here

P2128 Throttle / Pedal Position Sensor / Switch "E" Circuit High Input

- Accelerator pedal position sensor

- Open in EPA2 circuit

- Short in VCPA2 circuit

- Accelerator pedal

- ECM

Comes on DTC stored

Click here

P2138 Throttle / Pedal Position Sensor / Switch "D" / "E" Voltage Correlation

- Accelerator pedal

- Open or short in accelerator pedal position sensor circuit

Comes on DTC stored

Click here

U0101 Lost Communication with TCM

- ECM

- Transmission control ECU

- Open or short in ECM and transmission control ECU circuit

Comes on DTC stored

Click here

U0129 Lost Communication with Skid Control ECU

- ECM

- Skid control ECU

- Open or short in ECM and skid control ECU circuit

Comes on DTC stored

Click here