Fuel and Emissions Systems DTC Troubleshooting Index
DTC Troubleshooting Index

DTC
Two Drive
Cycle Detection
Detection Item
MIL
???
Variable Valve Timing Control (VTC) Oil Control Solenoid Valve A Malfunction
ON
???
Variable Valve Timing Control (VTC) A System Malfunction
ON
???
Variable Valve Timing Control (VTC) Oil Control Solenoid Valve B Malfunction
ON
???
Variable Valve Timing Control (VTC) B System Malfunction
ON
???
Camshaft Position (CMP) Sensor A and Crankshaft Position (CKP) Sensor Correlation
ON
???
Camshaft Position (CMP) Sensor B and Crankshaft Position (CKP) Sensor Correlation
ON
?
Turbocharger Bypass Control Solenoid Valve Circuit Low Voltage
ON
?
Turbocharger Bypass Control Solenoid Valve Circuit High Voltage
ON
???
Turbocharger Wastegate Control Actuator Position Exceeded Learning Limit
ON
???
Turbocharger Wastegate Control Actuator Circuit Malfunction
ON
???
Turbocharger Wastegate Control Actuator Circuit Range/Performance Problem
ON
?
Throttle Position Correlation
ON
???
Fuel Rail Pressure Too Low
ON
???
Fuel Rail Pressure Too High
ON
?
Fuel Pressure Regulator Performance
ON
?
Intake Air Temperature (IAT) Sensor 2 Out of Range
ON
?
Intake Air Temperature (IAT) Sensor 2 Circuit Range/Performance Problem
ON
?
Intake Air Temperature (IAT) Sensor 2 Circuit Low Voltage
ON
?
Intake Air Temperature (IAT) Sensor 2 Circuit High Voltage
ON
?
Intake Air Temperature (IAT) Sensor 2 Intermittent Interruption
ON
???
Turbocharger Boost Sensor/Barometric Pressure (BARO) Sensor Incorrect Correlation
ON
?
Evaporative Emission (EVAP) Vent Line Blockage
ON
???
Mass Air Flow (MAF) Sensor Circuit Range/Performance Problem
ON
???
Mass Air Flow (MAF) Sensor Circuit Low Voltage
ON
???
Mass Air Flow (MAF) Sensor Circuit High Voltage
ON
???
Manifold Absolute Pressure (MAP) Sensor Range/Performance Problem
ON
???
Manifold Absolute Pressure (MAP) Sensor Circuit Low Voltage
ON
???
Manifold Absolute Pressure (MAP) Sensor Circuit High Voltage
ON
?
Intake Air Temperature (IAT) Sensor 1 Out of Range
ON
?
Intake Air Temperature (IAT) Sensor 1 Circuit Range/Performance Problem
ON
?
Intake Air Temperature (IAT) Sensor 1 Circuit Low Voltage
ON
?
Intake Air Temperature (IAT) Sensor 1 Circuit High Voltage
ON
?
Intake Air Temperature (IAT) Sensor 1 Intermittent Interruption
ON
?
Engine Coolant Temperature (ECT) Sensor 1 Out of Range
ON
?
Engine Coolant Temperature (ECT) Sensor 1 Circuit Range/Performance Problem
ON
???
Engine Coolant Temperature (ECT) Sensor 1 Circuit Low Voltage
ON
???
Engine Coolant Temperature (ECT) Sensor 1 Circuit High Voltage
ON
?
Engine Coolant Temperature (ECT) Sensor 1 Circuit Out of Range
ON
?
Engine Coolant Temperature (ECT) Sensor 1 Circuit Range/Performance Problem
ON
?
Intake Air Temperature (IAT) Sensor 1 Circuit Range/Performance Problem
ON
?
Throttle Position (TP) Sensor A Range/Performance Problem
ON
???
Throttle Position (TP) Sensor A Circuit Low Voltage
ON
???
Throttle Position (TP) Sensor A Circuit High Voltage
ON
?
Intake Air Temperature (IAT) Sensor Too High
ON
?
Cooling System Malfunction
ON
?
Air Fuel Ratio (A/F) Sensor (Sensor 1) Circuit Low Voltage
ON
?
Air Fuel Ratio (A/F) Sensor (Sensor 1) Circuit High Voltage
ON
?
Air Fuel Ratio (A/F) Sensor (Sensor 1) Malfunction/Slow Response
ON
?
Air Fuel Ratio (A/F) Sensor (Sensor 1) Heater System Malfunction
ON
?
Air Fuel Ratio (A/F) Sensor (Sensor 1) Heater Circuit Malfunction
ON
?
Secondary Heated Oxygen Sensor (Secondary HO2S (Sensor 2)) Circuit Malfunction
ON
?
Secondary Heated Oxygen Sensor (Secondary HO2S (Sensor 2)) Circuit Low Voltage
ON
?
Secondary Heated Oxygen Sensor (Secondary HO2S (Sensor 2)) Circuit High Voltage
ON
?
Secondary Heated Oxygen Sensor (Secondary HO2S (Sensor 2)) Slow Response
ON
?
Secondary Heated Oxygen Sensor (Secondary HO2S (Sensor 2)) Circuit No Activity
ON
?
Secondary Heated Oxygen Sensor (Secondary HO2S (Sensor 2)) Heater Circuit Malfunction
ON
?
Fuel System Too Lean
ON
?
Fuel System Too Rich
ON
???
Fuel Rail Pressure Sensor Circuit Out of Range
ON
???
Fuel Rail Pressure Sensor Circuit Range/Performance Problem
ON
???
Fuel Rail Pressure Sensor Circuit Low Voltage
ON
???
Fuel Rail Pressure Sensor Circuit High Voltage
ON
???
No. 1 Cylinder Injector Circuit Malfunction
ON
???
No. 2 Cylinder Injector Circuit Malfunction
ON
???
No. 3 Cylinder Injector Circuit Malfunction
ON
???
No. 4 Cylinder Injector Circuit Malfunction
ON
?
Throttle Position (TP) Sensor B Range/Performance Problem
ON
???
Throttle Position (TP) Sensor B Circuit Low Voltage
ON
???
Throttle Position (TP) Sensor B Circuit High Voltage
ON
???
Fuel Pump Primary Circuit
OFF
???
Turbocharger Overboost Problem
ON
???
Turbocharger Boost Sensor Circuit Range/Performance Problem
ON
???
Turbocharger Boost Sensor Circuit Low Voltage
ON
???
Turbocharger Boost Sensor Circuit High Voltage
ON
?
Injector Performance Problem
OFF
???
Turbocharger Underboost Problem
ON
?
No. 1 Cylinder Injector Offset Learning Exceeds Minimum Limit
ON
?
No. 1 Cylinder Injector Offset Learning Exceeds Maximum Limit
ON
?
No. 2 Cylinder Injector Offset Learning Exceeds Minimum Limit
ON
?
No. 2 Cylinder Injector Offset Learning Exceeds Maximum Limit
ON
?
No. 3 Cylinder Injector Offset Learning Exceeds Minimum Limit
ON
?
No. 3 Cylinder Injector Offset Learning Exceeds Maximum Limit
ON
?
No. 4 Cylinder Injector Offset Learning Exceeds Minimum Limit
ON
?
No. 4 Cylinder Injector Offset Learning Exceeds Maximum Limit
ON
?
Random Misfire Detected
ON
?
No. 1 Cylinder Misfire Detected
ON
?
No. 2 Cylinder Misfire Detected
ON
?
No. 3 Cylinder Misfire Detected
ON
?
No. 4 Cylinder Misfire Detected
ON
?
Knock Sensor Malfunction
ON
?
Knock Sensor Circuit Low Voltage
ON
?
Knock Sensor Circuit High Voltage
ON
???
Crankshaft Position (CKP) Sensor No Signal
ON
???
Crankshaft Position (CKP) Sensor Circuit Intermittent Interruption
ON
???
Camshaft Position (CMP) Sensor A No Signal
ON
???
Camshaft Position (CMP) Sensor A Circuit Intermittent Interruption
ON
???
No. 1 Cylinder Ignition Coil Circuit Malfunction
ON
???
No. 2 Cylinder Ignition Coil Circuit Malfunction
ON
???
No. 3 Cylinder Ignition Coil Circuit Malfunction
ON
???
No. 4 Cylinder Ignition Coil Circuit Malfunction
ON
???
Camshaft Position (CMP) Sensor B Circuit Intermittent High Voltage
ON
???
Camshaft Position (CMP) Sensor B Circuit Intermittent Interruption
ON
?
Catalyst System Efficiency Below Threshold
ON
?
Evaporative Emission (EVAP) System Very Small Leak Detected
ON
?
Evaporative Emission (EVAP) Canister Purge Valve Circuit Malfunction
ON
?
Evaporative Emission (EVAP) Canister Vent Shut Valve Circuit Open
ON
?
Fuel Tank Pressure (FTP) Sensor Out of Range
ON
?
Fuel Tank Pressure (FTP) Sensor Circuit Range/Performance Problem
ON
?
Fuel Tank Pressure (FTP) Sensor Circuit Low Voltage
ON
?
Fuel Tank Pressure (FTP) Sensor Circuit High Voltage
ON
?
Evaporative Emission (EVAP) System Large Leak Detected
ON
?
Evaporative Emission (EVAP) System Very Small Leak Detected
ON
?
Fuel Level Sensor (Fuel Gauge Sending Unit) Circuit Range/Performance Problem
ON
?
Fuel Level Sensor (Fuel Gauge Sending Unit) Circuit Low Voltage
ON
?
Fuel Level Sensor (Fuel Gauge Sending Unit) Circuit High Voltage
ON
?
Evaporative Emission (EVAP) Canister Vent Shut Valve Circuit Low Voltage
ON
?
Evaporative Emission (EVAP) Canister Vent Shut Valve Circuit High Voltage
ON
?
Evaporative Emission (EVAP) System High Purge Flow Detected
ON
?
Evaporative Emission (EVAP) System Incorrect Purge Flow Detected
ON
?
Evaporative Emission (EVAP) System Low Purge Flow Detected
ON
?
Vehicle Speed Sensor A No Signal
ON
?
Idle Control System RPM Lower Than Expected
ON
?
Idle Control System RPM Higher Than Expected
ON
?
Cold Start Idle Air Control System Performance Problem
ON
?
Cold Start Ignition Timing Control System Performance Problem
ON
?
Rocker Arm Oil Pressure Sensor Circuit Low Voltage
OFF
?
Rocker Arm Oil Pressure Sensor Circuit High Voltage
OFF
?
A/C Pressure Sensor Circuit Low Voltage
OFF
?
A/C Pressure Sensor Circuit High Voltage
OFF
?
Fuel Rail Pressure Performance
ON
?
Powertrain Control Module (PCM) Power Source Circuit Unexpected Voltage
ON
???
Charging System Low Voltage
OFF
?
Brake Pedal Position Switch Circuit Malfunction
OFF
?
Powertrain Control Module (PCM) Processor Malfunction
ON
???
Powertrain Control Module (PCM) Internal Circuit Malfunction
ON
???
Powertrain Control Module (PCM) Internal Control Module Malfunction
ON
???
Powertrain Control Module (PCM) Internal Control Module Malfunction
ON
?
Starter Cut Relay Diagnosis Circuit Malfunction
OFF
???
Starter Cut Relay Diagnosis Circuit Low Voltage
OFF
???
Starter Cut Relay Diagnosis Circuit High Voltage
OFF
???
VIN Not Programmed or Mismatch
ON
???
Sensor Reference Voltage A Malfunction
ON
???
ACG No Charging Malfunction
OFF
?
A/F Sensor (Sensor 1) Heater Power Source Circuit Open
ON
?
A/F Sensor (Sensor 1) Heater Power Source Circuit Short to Ground
ON
?
A/F Sensor (Sensor 1) Heater Power Source Circuit Short to Power
ON
???/?*
Powertrain Control Module (PCM) Power Source Circuit Unexpected Voltage
OFF/ON*
?
Powertrain Control Module (PCM) Power Source Circuit Unexpected Voltage
OFF
?
Brake Pedal Position Switch (NC) Malfunction
OFF
?
Input Shaft (Mainshaft) Speed Sensor Circuit Malfunction
OFF
?
Output Shaft (Countershaft) Speed Sensor Circuit Malfunction
ON
?
Output Shaft (Countershaft) Speed Sensor Out of Range
ON
???/?*
Clutch Pedal Position Switch A Circuit High Voltage
OFF
???
Neutral Position Sensor A/B Incorrect Voltage Correlation
OFF
???
Neutral Position Sensor A Circuit Low Voltage
OFF
???
Neutral Position Sensor A Circuit High Voltage
OFF
?
Crankshaft Signal Diagnose
OFF
???
Charging System High Voltage
OFF
???
Battery Sensor Internal Failure
OFF
???
Throttle Valve Default Position Spring Performance Problem
ON
???
Throttle Valve Return Spring Performance Problem
ON
???
Alternator B Terminal Circuit Low Voltage
OFF
???
PGM-FI-ACG LIN Communication Error
OFF
???
PGM-FI-Battery Sensor LIN Communication Error
OFF
???
ACG High-temperature
OFF
???
Starter Cut Relay 1 Control Circuit Low Voltage
OFF
???
Starter Cut Relay 2 Control Circuit Low Voltage
OFF
???
Starter Cut Relay 1 Control Circuit High Voltage
OFF
???
Starter Cut Relay 2 Control Circuit High Voltage
OFF
?
Back-Up Light Switch Malfunction
OFF
???
Neutral Position Sensor B Circuit Low Voltage
OFF
???
Neutral Position Sensor B Circuit High Voltage
OFF
?
Post Catalyst Fuel Trim System Too Lean
ON
?
Post Catalyst Fuel Trim System Too Rich
ON
???
Electronic Throttle Control System (ETCS) Malfunction
ON
???
Throttle Actuator Current Range/Performance Problem
ON
???
Throttle Actuator Range
ON
?
Accelerator Pedal Position (APP) Sensor A (Throttle Position (TP) Sensor D) Out of Range
ON
???
Accelerator Pedal Position (APP) Sensor A (Throttle Position (TP) Sensor D) Circuit Low Voltage
ON
???
Accelerator Pedal Position (APP) Sensor A (Throttle Position (TP) Sensor D) Circuit High Voltage
ON
???
Accelerator Pedal Position (APP) Sensor B (Throttle Position (TP) Sensor E) Circuit Low Voltage
ON
???
Accelerator Pedal Position (APP) Sensor B (Throttle Position (TP) Sensor E) Circuit High Voltage
ON
???
Throttle Position (TP) Sensor A/B Incorrect Voltage Correlation
ON
???
Accelerator Pedal Position (APP) Sensor A/B (Throttle Position (TP) Sensor D/E) Incorrect Voltage Correlation
ON
?
Vehicle Speed Sensor B No Signal
ON
?
Output Shaft (Countershaft) Speed/Vehicle Speed Correlation
ON
???
Throttle Actuator Control System Idle Position Not Learned
ON
?
Engine Coolant Temperature (ECT) Sensor 2 Out of Range
ON
?
Engine Coolant Temperature (ECT) Sensor 2 Circuit Range/Performance Problem
ON
?
Engine Coolant Temperature (ECT) Sensor 2 Circuit Low Voltage
ON
?
Engine Coolant Temperature (ECT) Sensor 2 Circuit High Voltage
ON
?
Air Fuel Ratio (A/F) Sensor (Sensor 1) Signal Stuck Lean
ON
?
O2 Sensor Signal Biased/Stuck Rich
ON
?
Intake Air Temperature (IAT) Sensor 1-2 Incorrect Correlation
ON
?
No. 1 Cylinder Air-Fuel Ratio Variation
ON
?
No. 2 Cylinder Air-Fuel Ratio Variation
ON
?
No. 3 Cylinder Air-Fuel Ratio Variation
ON
?
No. 4 Cylinder Air-Fuel Ratio Variation
ON
???
Barometric Pressure (BARO) Sensor Circuit Out of Range High
ON
???
Barometric Pressure (BARO) Sensor Circuit Low Voltage
ON
???
Barometric Pressure (BARO) Sensor Circuit High Voltage
ON
?
Secondary Heated Oxygen Sensor (Secondary HO2S (Sensor 2)) Circuit Out of Range High
ON
?
Air Fuel Ratio (A/F) Sensor (Sensor 1) Malfunction
ON
?
Air Fuel Ratio (A/F) Sensor (Sensor 1) Malfunction
ON
?
Air Fuel Ratio (A/F) Sensor (Sensor 1) VCENT Circuit High Voltage
ON
?
Air Fuel Ratio (A/F) Sensor (Sensor 1) VS Circuit High Voltage
ON
?
Turbocharger Bypass Control Valve Stuck Closed
ON
?
Secondary Heated Oxygen Sensor (Secondary HO2S (Sensor 2)) Circuit Signal Stuck Lean
ON
?
Secondary Heated Oxygen Sensor (Secondary HO2S (Sensor 2)) Circuit Signal Stuck Rich
ON
?
Intake Air System Leak
ON
?
Evaporative Emission (EVAP) Canister Vent Shut Valve Stuck Closed Malfunction
ON
?
Turbocharger Wastegate Control Actuator Position Sensor Out of Range
ON
???
Turbocharger Wastegate Control Actuator Position Sensor Circuit Low Voltage
ON
???
Turbocharger Wastegate Control Actuator Position Sensor Circuit High Voltage
ON
?
Powertrain Control Module (PCM) Ignition Off Internal Timer Malfunction
ON
???
High Pressure Fuel Pump Spill Valve Malfunction
ON
?
Air Fuel Ratio (A/F) Sensor (Sensor 1) Circuit (LAF-CA, LAF-CP) Open Malfunction
ON
???
Rocker Arm Oil Control Solenoid Circuit Malfunction
ON
???
Rocker Arm Oil Pressure Switch Performance/Stuck off
ON
???
Rocker Arm Oil Pressure Switch Stuck on
ON
???
Rocker Arm Oil Control Solenoid Circuit Low Voltage
ON
???
Rocker Arm Oil Control Solenoid Circuit High Voltage
ON
???
F-CAN Malfunction (BUS-OFF (Powertrain Control Module (PCM)))
ON
???
F-CAN Malfunction (Powertrain Control Module (PCM)-Driving Support System Control Unit)
OFF
?
F-CAN Malfunction (Powertrain Control Module (PCM)-VSA Modulator-Control Unit)
ON
???
F-CAN Malfunction (Powertrain Control Module (PCM)-Electric Parking Brake Control Unit)
OFF
???
F-CAN Malfunction (Powertrain Control Module (PCM)-EPS Control Unit)
OFF
???
F-CAN Malfunction (Powertrain Control Module (PCM)-CAN Gateway)
ON
???
F-CAN Malfunction (Powertrain Control Module (PCM)-SRS Unit)
OFF
???
F-CAN Malfunction (Powertrain Control Module (PCM)-Gauge Control Module)
ON
???
F-CAN Malfunction (Powertrain Control Module (PCM)-Power Control Unit (PCU))
OFF
NOTE: The above DTCs are indicated when the PGM-FI system is selected with the HDS.
*: The detection drive cycle and the MIL indication may change depending on the vehicle condition when the fault is detected.