Fuel and Emissions Systems DTC Troubleshooting Index
DTC Troubleshooting Index

DTC
(MIL indication*)
Two Drive
Cycle Detection
Detection Item
MIL
?
Barometric Pressure (BARO) Sensor Circuit Range/Performance Problem
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 Circuit Low Voltage
ON
???
Manifold Absolute Pressure (MAP) Sensor Circuit High Voltage
ON
?
Intake Air Temperature (IAT) Sensor Circuit Range/Performance Problem
ON
?
Intake Air Temperature (IAT) Sensor Circuit Low Voltage
ON
?
Intake Air Temperature (IAT) Sensor Circuit High Voltage
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 Range/Performance Problem
ON
?
Intake Air Temperature (IAT) Sensor Circuit Range/Performance Problem
ON
???
Throttle Position (TP) Sensor A Circuit Low Voltage
ON
???
Throttle Position (TP) Sensor A Circuit High Voltage
ON
?
Engine Coolant Temperature (ECT) Sensor 1 Malfunction/Slow Response
ON
?
Cooling System Malfunction
ON
?
Rear Air Fuel Ratio (A/F) Sensor (Bank 1, Sensor 1) Malfunction/Slow Response
ON
?
Rear Air Fuel Ratio (A/F) Sensor (Bank 1, Sensor 1) Heater System Malfunction
ON
?
Rear Air Fuel Ratio (A/F) Sensor (Bank 1, Sensor 1) Heater System Malfunction
ON
?
Rear Air Fuel Ratio (A/F) Sensor (Bank 1, Sensor 1) Heater Circuit Malfunction
ON
?
Rear Air Fuel Ratio (A/F) Sensor (Bank 1, Sensor 1) Heater Circuit Malfunction
ON
?
Rear Secondary Heated Oxygen Sensor (Secondary HO2S (Bank 1, Sensor 2)) Circuit Low Voltage
ON
?
Rear Secondary Heated Oxygen Sensor (Secondary HO2S (Bank 1, Sensor 2)) Circuit High Voltage
ON
?
Rear Secondary Heated Oxygen Sensor (Secondary HO2S (Bank 1, Sensor 2)) Slow Response
ON
?
Rear Secondary Heated Oxygen Sensor (Secondary HO2S (Bank 1, Sensor 2)) Heater Circuit Malfunction
ON
?
Front Air Fuel Ratio (A/F) Sensor (Bank 2, Sensor 1) Malfunction/Slow Response
ON
?
Front Air Fuel Ratio (A/F) Sensor (Bank 2, Sensor 1) Heater System Malfunction
ON
?
Front Air Fuel Ratio (A/F) Sensor (Bank 2, Sensor 1) Heater System Malfunction
ON
?
Front Air Fuel Ratio (A/F) Sensor (Bank 2, Sensor 1) Heater Circuit Malfunction
ON
?
Front Air Fuel Ratio (A/F) Sensor (Bank 2, Sensor 1) Heater Circuit Malfunction
ON
?
Front Secondary Heated Oxygen Sensor (Secondary HO2S (Bank 2, Sensor 2)) Circuit Low Voltage
ON
?
Front Secondary Heated Oxygen Sensor (Secondary HO2S (Bank 2, Sensor 2)) Circuit High Voltage
ON
?
Front Secondary Heated Oxygen Sensor (Secondary HO2S (Bank 2, Sensor 2)) Slow Response
ON
?
Front Secondary Heated Oxygen Sensor (Secondary HO2S (Bank 2, Sensor 2)) Heater Circuit Malfunction
ON
?
Rear Bank (Bank 1) Fuel System Too Lean
ON
?
Rear Bank (Bank 1) Fuel System Too Rich
ON
?
Front Bank (Bank 2) Fuel System Too Lean
ON
?
Front Bank (Bank 2) Fuel System Too Rich
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
???
No. 5 Cylinder Injector Circuit Malfunction
ON
???
No. 6 Cylinder Injector Circuit Malfunction
ON
???
Throttle Position (TP) Sensor B Circuit Low Voltage
ON
???
Throttle Position (TP) Sensor B Circuit High Voltage
ON
P0300 (211)
and any combination of the following:
P0301 (71)
P0302 (72)
P0303 (73)
P0304 (74)
P0305 (75)
P0306 (76)
?
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
?
No. 5 Cylinder Misfire Detected
ON
?
No. 6 Cylinder Misfire Detected
ON
?
Knock Sensor 1 (Bank 1) Malfunction
ON
?
Knock Sensor 1 (Bank 1) Voltage Low
ON
?
Knock Sensor 1 (Bank 1) Voltage High
ON
?
Knock Sensor 2 (Bank 2) Malfunction
ON
?
Knock Sensor 2 (Bank 2) Voltage Low
ON
?
Knock Sensor 2 (Bank 2) Voltage High
ON
???
Crankshaft Position (CKP) Sensor No Signal
ON
???
Crankshaft Position (CKP) Sensor 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
???
No. 5 Cylinder Ignition Coil Circuit Malfunction
ON
???
No. 6 Cylinder Ignition Coil Circuit Malfunction
ON
???
Camshaft Position (CMP) Sensor Circuit No Signal
ON
???
Camshaft Position (CMP) Sensor Circuit Intermittent Interruption
ON
?
Exhaust Gas Recirculation (EGR) System Leak Detected
ON
?
Exhaust Gas Recirculation (EGR) Insufficient Flow
ON
?
Exhaust Gas Recirculation (EGR) Valve Circuit Range/Performance Problem
ON
?
Exhaust Gas Recirculation (EGR) Valve Position Sensor Circuit High Voltage
ON
?
Rear Bank Catalyst System Efficiency Below Threshold (Bank 1)
ON
?
Front Bank Catalyst System Efficiency Below Threshold (Bank 2)
ON
?
Evaporative Emission (EVAP) System Purge Flow Malfunction
ON
?
Evaporative Emission (EVAP) Canister Purge Valve Circuit Malfunction
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
OFF
?
Fuel Level Sensor (Fuel Gauge Sending Unit) Circuit Low Voltage
OFF
?
Fuel Level Sensor (Fuel Gauge Sending Unit) Circuit High Voltage
OFF
?
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 Low Purge Flow Detected
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 Idle Speed Problem
ON
?
Rocker Arm Oil Pressure Sensor Circuit Low Voltage
ON
?
Rocker Arm Oil Pressure Sensor Circuit High Voltage
ON
?
A/C Pressure Sensor Circuit Low Voltage
OFF
?
A/C Pressure Sensor Circuit High Voltage
OFF
???
Charging System Low Voltage
OFF
?
Powertrain Control Module (PCM) Power Source Circuit Unexpected Voltage
OFF
?
Brake Pedal Position Switch Circuit Malfunction
OFF
???
Powertrain Control Module (PCM) Programming Error
ON
???
Powertrain Control Module (PCM) Internal Circuit Malfunction
ON
???
Powertrain Control Module (PCM) Internal Control Module Malfunction
ON
?
Starter Cut Relay Diagnosis Circuit Malfunction
OFF
???
Starter Cut Relay Diagnosis Circuit Malfunction
OFF
???
Starter Cut Relay Diagnosis Circuit Low Voltage
OFF
???
Fuel Pump Control (FPC) System Malfunction
OFF
???
Powertrain Control Module (PCM) Internal Control Module Keep Alive Memory (KAM) Error
ON
???
VIN Not Programmed or Mismatch
ON
???
Sensor Reference Voltage A Malfunction
ON
???
Sensor Reference Voltage B Malfunction
ON
???
ACG No Charging Malfunction
OFF
?
Powertrain Control Module (PCM) Power Control Circuit/Internal Circuit Malfunction
ON
???
Internal VCC Power Malfunction
ON
?
Brake Pedal Position Switch (NC) Malfunction
OFF
?
Input Shaft (Mainshaft) Speed Sensor Circuit Malfunction
OFF
?
Output Shaft (Countershaft) Speed Sensor Circuit Malfunction
ON
???
Clutch Pedal Position Switch A Circuit High Voltage
OFF
?
Clutch Pedal Position Switch B Circuit Low Voltage
OFF
?
Rear Air Fuel Ratio (A/F) Sensor (Bank 1, Sensor 1) Circuit Out of Range High
ON
?
Front Air Fuel Ratio (A/F) Sensor (Bank 2, Sensor 1) Circuit Out of Range High
ON
?
Electrical Load Detector (ELD) Circuit Low Voltage
OFF
?
Electrical Load Detector (ELD) Circuit High Voltage
OFF
?
Fuel Tank Pressure (FTP) Sensor Circuit Range/Performance Problem
ON
?
Fuel Tank Pressure (FTP) Sensor Circuit Range/Performance Problem
ON
???
Charging System High Voltage
OFF
???
Battery Sensor Internal Failure
OFF
???
Electronic Throttle Control System (ETCS) Control Relay ON Malfunction
ON
???
Electronic Throttle Control System (ETCS) Control Relay OFF Malfunction
ON
???
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
???
Powertrain Control Module (PCM) Internal Circuit Malfunction (Starter Control Circuit Malfunction)
ON
???
Powertrain Control Module (PCM) Internal Circuit Malfunction (Starter Control Circuit Malfunction)
ON
???
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
???
Powertrain Control Module (PCM) Internal Circuit Malfunction (Starter Control Circuit Malfunction)
ON
???
Powertrain Control Module (PCM) Internal Circuit Malfunction (Starter Control Circuit Malfunction)
ON
?
Manifold Absolute Pressure (MAP) Sensor Signal Higher Than Expected
ON
?
Manifold Absolute Pressure (MAP) Sensor Signal Lower Than Expected
ON
?
Post Catalyst Fuel Trim System Too Lean (Bank 1)
ON
?
Post Catalyst Fuel Trim System Too Rich (Bank 1)
ON
?
Post Catalyst Fuel Trim System Too Lean (Bank 2)
ON
?
Post Catalyst Fuel Trim System Too Rich (Bank 2)
ON
???
Electronic Throttle Control System (ETCS) Malfunction
ON
???
Throttle Actuator Current Range/Performance Problem
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
???
Throttle Actuator Control System Idle Position Not Learned
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
?
Rear Air Fuel Ratio (A/F) Sensor (Bank 1, Sensor 1) Signal Stuck Lean
ON
?
Front Air Fuel Ratio (A/F) Sensor (Bank 2, Sensor 1) Signal Stuck Lean
ON
?
Barometric Pressure (BARO) Sensor Circuit Low Voltage
ON
?
Barometric Pressure (BARO) Sensor Circuit High Voltage
ON
?
Rear Air Fuel Ratio (A/F) Sensor (Bank 1, Sensor 1) IP Circuit High Voltage
ON
?
Rear Air Fuel Ratio (A/F) Sensor (Bank 1, Sensor 1) IP Circuit High Voltage
ON
?
Rear Air Fuel Ratio (A/F) Sensor (Bank 1, Sensor 1) IP Circuit Low Voltage
ON
?
Rear Air Fuel Ratio (A/F) Sensor (Bank 1, Sensor 1) IP Circuit Low Voltage
ON
?
Front Air Fuel Ratio (A/F) Sensor (Bank 2, Sensor 1) IP Circuit High Voltage
ON
?
Front Air Fuel Ratio (A/F) Sensor (Bank 2, Sensor 1) IP Circuit High Voltage
ON
?
Front Air Fuel Ratio (A/F) Sensor (Bank 2, Sensor 1) IP Circuit Low Voltage
ON
?
Front Air Fuel Ratio (A/F) Sensor (Bank 2, Sensor 1) IP Circuit Low Voltage
ON
?
Rear Air Fuel Ratio (A/F) Sensor (Bank 1, Sensor 1) VCENT Circuit High Voltage
ON
?
Rear Air Fuel Ratio (A/F) Sensor (Bank 1, Sensor 1) VCENT Circuit High Voltage
ON
?
Rear Air Fuel Ratio (A/F) Sensor (Bank 1, Sensor 1) VCENT Circuit Low Voltage
ON
?
Rear Air Fuel Ratio (A/F) Sensor (Bank 1, Sensor 1) VCENT Circuit Low Voltage
ON
?
Front Air Fuel Ratio (A/F) Sensor (Bank 2, Sensor 1) VCENT Circuit High Voltage
ON
?
Front Air Fuel Ratio (A/F) Sensor (Bank 2, Sensor 1) VCENT Circuit High Voltage
ON
?
Front Air Fuel Ratio (A/F) Sensor (Bank 2, Sensor 1) VCENT Circuit Low Voltage
ON
?
Front Air Fuel Ratio (A/F) Sensor (Bank 2, Sensor 1) VCENT Circuit Low Voltage
ON
?
Rear Air Fuel Ratio (A/F) Sensor (Bank 1, Sensor 1) VS Circuit High Voltage
ON
?
Rear Air Fuel Ratio (A/F) Sensor (Bank 1, Sensor 1) VS Circuit High Voltage
ON
?
Rear Air Fuel Ratio (A/F) Sensor (Bank 1, Sensor 1) VS Circuit High Voltage
ON
?
Rear Air Fuel Ratio (A/F) Sensor (Bank 1, Sensor 1) VS Circuit Low Voltage
ON
?
Rear Air Fuel Ratio (A/F) Sensor (Bank 1, Sensor 1) VS Circuit Low Voltage
ON
?
Front Air Fuel Ratio (A/F) Sensor (Bank 2, Sensor 1) VS Circuit High Voltage
ON
?
Front Air Fuel Ratio (A/F) Sensor (Bank 2, Sensor 1) VS Circuit Low Voltage
ON
?
Rear Secondary Heated Oxygen Sensor (Secondary HO2S (Bank 1, Sensor 2)) Circuit Signal Stuck Lean
ON
?
Front Secondary Heated Oxygen Sensor (Secondary HO2S (Bank 2, Sensor 2)) Circuit Signal Stuck Lean
ON
?
Intake Air System Leak
ON
?
Exhaust Gas Recirculation (EGR) System Malfunction
ON
?
Evaporative Emission (EVAP) Canister Vent Shut Valve Stuck Closed Malfunction
ON
???
Powertrain Control Module (PCM) Ignition Off Internal Timer Malfunction
ON
?
Air Fuel Ratio (A/F) Sensor B1 S1 LABEL Circuit Low Voltage
ON
?
Air Fuel Ratio (A/F) Sensor B1 S1 LABEL Circuit High Voltage
ON
?
Air Fuel Ratio (A/F) Sensor B2 S1 LABEL Circuit Low Voltage
ON
?
Air Fuel Ratio (A/F) Sensor B2 S1 LABEL Circuit High Voltage
ON
???
Rocker Arm Oil Pressure Switch A (Bank 1) Circuit Low Voltage
ON
???
Rocker Arm Oil Pressure Switch A (Bank 1) Circuit Low Voltage
ON
???
Rocker Arm Oil Pressure Switch A (Bank 1) Circuit High Voltage
ON
???
Rocker Arm Oil Pressure Switch A (Bank 1) Circuit High Voltage
ON
???
Rocker Arm Oil Control Solenoid A (Bank 1) Circuit Low Voltage
ON
???
Rocker Arm Oil Control Solenoid A (Bank 1) Circuit Low Voltage
ON
???
Rocker Arm Oil Control Solenoid A (Bank 1) Circuit High Voltage
ON
???
Rocker Arm Oil Pressure Switch B (Bank 1) Performance/Stuck off
ON
???
Rocker Arm Oil Pressure Switch B (Bank 1) Stuck on
ON
???
Rocker Arm Oil Control Solenoid B (Bank 1) Circuit Low Voltage
ON
???
Rocker Arm Oil Control Solenoid B (Bank 1) Circuit High Voltage
ON
???
Rocker Arm Oil Pressure Switch A (Bank 2) Circuit Low Voltage
ON
???
Rocker Arm Oil Pressure Switch A (Bank 2) Circuit Low Voltage
ON
???
Rocker Arm Oil Pressure Switch A (Bank 2) Circuit High Voltage
ON
???
Rocker Arm Oil Pressure Switch A (Bank 2) Circuit High Voltage
ON
???
Rocker Arm Oil Control Solenoid A (Bank 2) Circuit Low Voltage
ON
???
Rocker Arm Oil Control Solenoid A (Bank 2) Circuit Low Voltage
ON
???
Rocker Arm Oil Control Solenoid A (Bank 2) Circuit High Voltage
ON
?
Rear Air Fuel Ratio (A/F) Sensor (Bank 1, Sensor 1) Circuit Range/Performance Problem
ON
?
Front Air Fuel Ratio (A/F) Sensor (Bank 2, Sensor 1) Circuit Range/Performance Problem
ON
???
F-CAN Malfunction (BUS-OFF (Powertrain Control Module (PCM))
ON
???
F-CAN Malfunction (Powertrain Control Module (PCM)-ACC Unit/Multipurpose Camera Unit)
OFF
???
F-CAN Malfunction (Powertrain Control Module (PCM)-VSA Modulator Control Unit)
OFF
???
F-CAN Malfunction (Powertrain Control Module (PCM)-EPS Control Unit)
OFF
???
F-CAN Malfunction (Powertrain Control Module (PCM)-Gauge Control Module)
ON
???
F-CAN Malfunction (Powertrain Control Module (PCM)-Active Control Engine Mount (ACM))
OFF
???
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.
Some automatic transmission DTCs cause the MIL to come on. If the MIL is on and no DTCs are indicated in the PGM-FI system, select the A/T system, and check for automatic transmission DTCs.
*: These DTCs are indicated by a blinking MIL when the SCS line is jumped with the HDS. Some DTCs do not cause the MIL to blink when the SCS line is jumped; these DTCs are shown in the gauge display.
*1: A/T
*2: M/T
*3: Except California
*4: California
*5: J35Y1 engine
*6: J35Y2 engine
*7: With ACC