Diagnostic Trouble Code Definitions
WARNING: This page is about a different car, the 2003 GMC Sierra and 2003 Chevrolet Silverado. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
Diagnostic Trouble Code Definitions listed in the DIAGNOSTIC TROUBLE CODE DEFINITIONS table apply to Bi-Fuel & CNG vehicles only. For all other Diagnostic Trouble Code Definitions, see DIAGNOSTIC TROUBLE CODE DEFINITIONS
in SELF-DIAGNOSTICS - 4.8L, 5.3L & 6.0L "C", "K", "N", "S" & "T" SERIES - FLEX FUEL & GASOLINE article.
NOTE:
Use of Tech 2 or generic OBD-II scan tool is required to retrieve DTCs. Refer to user reference manual supplied with scan tool.
DIAGNOSTIC TROUBLE CODE DEFINITIONS
| DTC | (1) Definition | (2) Code Type | ||||||
|---|---|---|---|---|---|---|---|---|
| P0005 | Fuel Shutoff Valve "A" Control Circuit/Open | N/A | ||||||
| P0148 | Fuel Delivery Error | N/A | ||||||
| P0171 (3) | Fuel Trim System Lean - Bank 1 | B | ||||||
| P0172 (3) | Fuel Trim System Rich - Bank 1 | B | ||||||
| P0174 (3) | Fuel Trim System Lean - Bank 2 | B | ||||||
| P0175 (3) | Fuel Trim System Rich - Bank 2 | B | ||||||
| P0182 | Fuel Tank Temperature Sensor Circuit - Low Voltage | C | ||||||
| P0183 | Fuel Tank Temperature Sensor Circuit - High Voltage | C | ||||||
| P0187 | Fuel Rail Temperature Sensor Circuit - Low Voltage | C | ||||||
| P0188 | Fuel Rail Temperature Sensor Circuit - High Voltage | C | ||||||
| P0191 | Fuel Rail Pressure Sensor Circuit Performance | N/A | ||||||
| P0192 | Fuel Rail Pressure Sensor Circuit - Low Voltage | B | ||||||
| P0193 | Fuel Rail Pressure Sensor Circuit - High Voltage | B | ||||||
| P0200 | Injector Control Circuit Voltage | B | ||||||
| P0300 | Random/Multiple Cylinder Misfire Detected | B | ||||||
| P0611 | Fuel Injector Control Module Performance | N/A | ||||||
| P1020 | Incorrect Voltage On A CNG Fuel Injector Control Circuit | N/A | ||||||
| P1021-P1028 | Incorrect Voltage On A CNG Fuel Injector Control Circuit | N/A | ||||||
| P1204 | Vehicle Does Not Start On CNG | N/A | ||||||
| P1207 | Fuel Rail Pressure Output PWM Signal Not Received By PCM | N/A | ||||||
| P1209 | FICM Diagnostic Output PWM Signal Not Received By PCM | N/A | ||||||
| P1432 | Fuel Tank Pressure Sensor Signal Low | C | ||||||
| P1433 | Fuel Tank Pressure Sensor Signal High | C | ||||||
| P2146 | Incorrect Voltage Detected - Command State Of AFO Enable Circuit | N/A | ||||||
| P2665 | Incorrect Voltage Detected - Low Pressure Lock-Off Solenoid | N/A | ||||||
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