Diagnostic Trouble Code Definitions

DIAGNOSTIC TROUBLE CODE INDEX

DTC

⁽¹⁾ Description

⁽²⁾ Code Type

BXXXX ⁽³⁾

Body Control Systems Malfunction

N/A

CXXXX ⁽³⁾

Chassis Control System Malfunction

N/A

Camshaft Position Sensor/Crankshaft Position Sensor Correlation Error

C

Fuel Rail Pressure Low

A

Fuel Rail Pressure High

A

Fuel Rail Pressure Sensor Indicating Fuel Pressure Higher Than Desired

⁽⁴⁾

Fuel Rail Pressure Sensor Current Out Of Range

A

Mass Air Flow Sensor Performance

⁽⁵⁾

Mass Air Flow Sensor Circuit - Low Frequency

B

Mass Air Flow Sensor Circuit - High Frequency

B

Intake Air Temperature Sensor Circuit - Low Voltage

B

Intake Air Temperature Sensor Circuit - High Voltage

B

ECT Sensor Performance

⁽⁶⁾ B

ECT Sensor Circuit - Low Voltage

B

ECT Sensor Circuit - High Voltage

B

ECT Less Than Thermostat Regulating Temperature

B

Fuel Temperature Sensor High

C

Fuel Temperature Sensor & IAT Sensor Temperature Not Within Specification

B

Fuel Temperature Sensor Circuit - Low Voltage

A

Fuel Temperature Sensor Circuit - High Voltage

A

Fuel Rail Pressure Sensor Circuit - Low Voltage

A

Fuel Rail Pressure Sensor Circuit - High Voltage

A

Fuel Injector Control Circuits

A

Turbocharger Engine Overboost Condition - California RPO YF5, NE1

B

Turbocharger Engine Overboost Condition - Federal RPO FE9, NG1

B

Turbocharger Boost System - California RPO YF5, NE1

B

Turbocharger Boost System - Federal RPO FE9, NG1

C

Turbocharger Boost Sensor Circuit Low Voltage - California RPO YF5, NE1

B

Turbocharger Boost Sensor Circuit Low Voltage- Federal RPO FE9, NG1

B

Turbocharger Boost Sensor Circuit High Voltage - California RPO YF5, NE1

B

Turbocharger Boost Sensor Circuit High Voltage - Federal RPO FE9, NG1

B

Engine Misfire Detected - California RPO YF5, NE1

B

Engine Misfire Detected - Federal- Federal RPO FE9, NG1

C

Cylinders No. 1-8 Misfire Detected - California RPO YF5, NE1

B

Cylinders No. 1-8 Misfire Detected - Federal RPO FE9, NG1

C

Crankshaft Position Sensor Circuit

A

Crankshaft Position Sensor Circuit Performance

B

CMP Sensor Circuit Performance

A

Camshaft Position Sensor Circuit Performance

B

Timing Reference High Resolution

A

Timing Reference High Resolution

A

Glow Plug Circuit Performance - California RPO YF5, NE1

B

Glow Plug Circuit Performance - Federal RPO FE9, NG1

C

P0381 ⁽³⁾

Wait-To-Start Indicator Fault Detection Circuit Malfunction

⁽⁵⁾

EGR System - Insufficient Flow

⁽⁶⁾ B

EGR Valve Open Pintle Position

⁽⁶⁾ B

EGR Pintle Position Circuit - Low Voltage

⁽⁶⁾ B

EGR Sensor Circuit High Voltage

⁽⁶⁾ B

P0461

Fuel Level Sensor Circuit Performance

C

P0462

Fuel Level Sensor Circuit - Low Voltage

C

P0463

Fuel Level Sensor Circuit - High Voltage

C

EGR Solenoid Circuit - Low Voltage

⁽⁶⁾ B

EGR Solenoid Circuit - High Voltage

⁽⁶⁾ B

P0500

Vehicle Speed Sensor

⁽⁷⁾ B

P0522

Engine Oil Pressure Sensor Circuit Low Voltage

C

P0523

Engine Oil Pressure Sensor Circuit High Voltage

C

P0530

A/C Refrigerant Pressure Sensor Circuit

C

Intake Air Heater - Incorrect Voltage

B

Intake Air Heater - Incorrect Voltage

B

P0562

Low System Voltage

C

P0563

High System Voltage

C

P0567 ⁽⁸⁾

Cruise Control

C

P0568 ⁽⁸⁾

Cruise Control Set/Coast Switch Circuit

C

P0571 ⁽⁸⁾

Cruise Control Brake Switch Circuit

C

ECM Memory

A

ECM Not Programmed

A

Control Module Long Term Memory Reset

C

ECM Random Access Memory Performance

A

ECM Memory

A

ECM Memory

A

ECM Memory

A

P0608 ⁽⁹⁾

Vehicle Speed Circuit Fault

C

P0609 ⁽³⁾

Vehicle Speed Signal Circuit - Low Voltage

C

Fuel Injection Control Module Internal Fault

B

Fuel Injection Control Module Internal Fault

B

P0615 ⁽³⁾

Starter Relay Circuit

C

P0621 ⁽³⁾

Generator Turn-On Signal Circuit Low/High

C

P0622 ⁽³⁾

Generator PWM Signal Out Of Range

C

5-Volt Reference Circuit Out Of Range

A

MIL Control Circuit

A

Sensor Reference Voltage "B" Circuit/Open

B

P0654 ⁽⁹⁾

Engine Speed Circuit Fault

C

TCM MIL Request

A

P0704 ⁽¹⁰⁾

Clutch Pedal Switch Input Circuit

B

P0706 ⁽¹¹⁾

Transmission Range Switch

C

Transmission Control System MIL Request Circuit Open

B

P0833 ⁽¹⁰⁾

Vehicle Speed Transitions Detected Without Clutch Switch Transitions

C

Fuel Rail Pressure Out Of Range

⁽⁴⁾

Excessive Fuel Injection Pump Flow

C

Accelerator Pedal Position Sensors Out Of Range Or Disagree

C

Fuel Transfer Malfunction

C

Incorrect Voltage For Commanded State Of Injector Driver No. 1

⁽⁵⁾

Incorrect Voltage For Commanded State Of Injector Driver No. 2

⁽⁵⁾

Incorrect Voltage For Commanded State Of Injector Driver No. 3

⁽⁵⁾

Incorrect Voltage For Commanded State Of Injector Driver No. 4

⁽⁵⁾

Incorrect Voltage For Commanded State Of Injector Driver No. 5

⁽⁵⁾

Commanded State Of Injector Driver No. 6

⁽⁵⁾

Incorrect Voltage For Commanded State Of Injector Driver No. 7

⁽⁵⁾

Incorrect Voltage For Commanded State Of Injector Driver No. 8

⁽⁵⁾

Engine Over-Temperature Condition

A

Accelerator Pedal Position Sensor A/D Converter Error

C

P1404 ⁽⁶⁾

EGR Valve Closed Pintle Position

B

Fuel Injector Control Module - Low Voltage

C

ECM Memory

A

ECM Memory Performance

C

P1626 ⁽³⁾

Passlock® System Malfunction

C

ECM Memory

A

P1631 ⁽³⁾

Passlock® System Malfunction

C

P1637 ⁽³⁾

Generator "L" Terminal Circuit - Improper Voltage Level

C

P1638 ⁽³⁾

Generator Field Duty Cycle Signal Circuit Out Of Range

C

Fuel Injector Control Module Driver Circuits

A

ECM Memory

A

ECM Memory

A

ECM Memory

A

P2066 ⁽⁹⁾

Secondary Fuel Level Sensor Signal Lack Of Variation

C

P2067 ⁽⁹⁾

Secondary Fuel Level Sensor Signal Lower Than Normal

C

P2068 ⁽⁹⁾

Secondary Fuel Level Sensor Signal Higher Than Normal

C

Accelerator Pedal Position Sensor No. 1 Low Voltage

C

Accelerator Pedal Position Sensor No. 1 High Voltage

C

Accelerator Pedal Position Sensor No. 2 Low Voltage

C

Accelerator Pedal Position Sensor No. 2 High Voltage

C

Accelerator Pedal Position Sensor No. 3 Low Voltage

C

Accelerator Pedal Position Sensor No. 3 High Voltage

C

Accelerator Pedal Position Sensors No. 1 & 2 Correlation Error

C

Accelerator Pedal Position Sensors No. 2 & 3 Correlation Error

C

Accelerator Pedal Position Sensors No. 1 & 3 Correlation Error

C

EGR Throttle Valve Vacuum Control Solenoid Circuit - Low Voltage

⁽⁶⁾ B

EGR Throttle Valve Vacuum Control Solenoid Circuit - High Voltage

⁽⁶⁾ B

EGR Throttle Valve Vacuum Control Solenoid Circuit - High Voltage

⁽⁶⁾ B

EGR Vacuum Vent Solenoid Control Circuit - High Voltage

⁽⁶⁾ B

Fuel Injector Circuit Condition - Cylinder No. 1, 4, 6, Or 7

A

Fuel Injector Circuit Condition - Cylinder No. 2, 3, 5, Or 8

A

Barometric Pressure Sensor/EGR Vacuum Sensor Correlation Error - California RPO YF5, NE1

B

Barometric Pressure Sensor/Boost Sensor Correlation Error - Federal RPO FE9, NG1

C

Barometric Pressure Sensor Signal Low - California RPO YF5, NE1

B

Barometric Pressure Sensor Signal Low - Federal RPO FE9, NG1

B

Barometric Pressure Sensor Signal High - California RPO YF5, NE1

B

Barometric Pressure Sensor Signal High - Federal RPO FE9, NG1

B

P2279 ⁽⁶⁾

Air Intake Leak Detected

B

ECM Memory

B

UXXXX ⁽³⁾

Network Communication System Malfunction

N/A

⁽¹⁾	DTC definitions may vary depending on vehicle and/or engine configuration.

⁽²⁾	See CODE TYPES under ON-BOARD DIAGNOSTICS.

⁽³⁾	See appropriate BODY CONTROL SYSTEM article in ACCESSORIES & EQUIPMENT.

⁽⁴⁾	On California emissions equipped vehicles (RPO codes YF5, NE1), this DTC is a type "A" code. On Federal emissions equipped vehicles (RPO codes FE9, NG1), this DTC is a type "C" code.

⁽⁵⁾	On California emissions equipped vehicles (RPO codes YF5, NE1), this DTC is a type "B" code. On Federal emissions equipped vehicles (RPO codes FE9, NG1), this DTC is a type "C" code.

⁽⁶⁾	Code does not apply to Federal vehicles

⁽⁷⁾	On vehicles equipped with A/T, see appropriate DIAGNOSIS article in AUTOMATIC TRANSMISSIONS. On vehicles equipped with M/T, see appropriate DIAGNOSIS article in MANUAL TRANSMISSIONS.

⁽⁸⁾	See appropriate CRUISE CONTROL SYSTEMS article in ACCESSORIES & EQUIPMENT.

⁽⁹⁾	See appropriate ANALOG INSTRUMENT PANELS article in ACCESSORIES & EQUIPMENT.

⁽¹⁰⁾	See appropriate DIAGNOSIS article in MANUAL TRANSMISSIONS.

⁽¹¹⁾	See appropriate DIAGNOSIS article in AUTOMATIC TRANSMISSIONS.