Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
SYS.OK|MANUAL.DB● LIVE
HOMESERVICE MANUALSCHEVROLET1998PICKUP C2500, 2D PICKUP, 5.0 M, STANDARDREPAIR AND DIAGNOSISENGINE PERFORMANCESYSTEMENGINE CONTROLS - SYSTEM & COMPONENT TESTING 5.0LCOMPUTERIZED ENGINE CONTROLSDIAGNOSTIC TROUBLE CODES
1998 Chevrolet Pickup C2500, 2D Pickup, 5.0 M, Standard
Diagnostic Trouble Codes
1998 Chevrolet Pickup C2500, 2D Pickup, 5.0 M, StandardSECTION Diagnostic Trouble Codes
TROUBLE CODE DEFINITION
| Code No. | Circuit Affected |
|---|---|
| P0101 | MAF System Performance |
| P0102 | MAF Sensor Circuit Low Frequency |
| P0103 | MAF Sensor Circuit High Frequency |
| P0106 | MAP Sensor System Performance |
| P0107 | MAP Sensor Circuit Low Voltage |
| P0108 | MAP Sensor Circuit High Voltage |
| P0112 | IAT Sensor Circuit Low Voltage |
| P0113 | IAT Sensor Circuit High Voltage |
| P0117 | ECT Sensor Circuit Low Voltage |
| P0118 | ECT Sensor Circuit High Voltage |
| P0121 | TP Sensor System Performance |
| P0122 | TP Sensor Circuit Low Voltage |
| P0123 | TP Sensor Circuit High Voltage |
| P0125 | ECT Excessive Time To Reach Closed Loop |
| P0131 | HO2S Circuit Low Voltage-Bank 1, Sensor 1 |
| P0132 | HO2S Circuit High Voltage-Bank 1, Sensor 1 |
| P0133 | HO2S Slow Response-Bank 1, Sensor 1 |
| P0134 | HO2S Insufficient Activity-Bank 1, Sensor 1 |
| P0135 | HO2S Heater Circuit-Bank 1, Sensor 1 |
| P0137 | HO2S Circuit Low Voltage-Bank 1, Sensor 2 |
| P0138 | HO2S Circuit High Voltage Bank 1, Sensor 2 |
| P0140 | HO2S Insufficient Activity-Bank 1, Sensor 2 |
| P0141 | HO2S Heater Circuit-Bank 1, Sensor 2 |
| P0143 | HO2S Circuit Low Voltage-Bank 1, Sensor 3 |
| P0144 | HO2S Circuit High Voltage-Bank 1, Sensor 3 |
| P0146 | HO2S Insufficient Activity-Bank 1, Sensor 3 |
| P0147 | HO2S Heater Circuit-Bank 1, Sensor 3 |
| P0151 | HO2S Circuit Low Voltage-Bank 2, Sensor 1 |
| P0152 | HO2S Circuit High Voltage-Bank 2, Sensor 1 |
| P0153 | HO2S Slow Response-Bank 2, Sensor 1 |
| P0154 | HO2S Insufficient Activity-Bank 2, Sensor 1 |
| P0155 | HO2S Heater Circuit-Bank 2, Sensor 1 |
| P0157 | HO2S Circuit Low Voltage-Bank 2, Sensor 2 |
| P0158 | HO2S Circuit High Voltage-Bank 2, Sensor 2 |
| P0160 | HO2S Insufficient Activity-Bank 2, Sensor 2 |
| P0161 | HO2S Heater Circuit-Bank 2, Sensor 2 |
| P0171 | Fuel Trim System Lean-Bank 1 |
| P0172 | Fuel Trim System Rich-Bank 1 |
| P0174 | Fuel Trim System Lean-Bank 2 |
| P0175 | Fuel Trim System Rich-Bank 2 |
| P0300 | Engine Misfire Detected |
| P0325 | Knock Sensor Circuit |
| P0327 | Knock Sensor Low Voltage |
| P0336 | CKP Sensor Circuit Performance |
| P0337 | CKP Sensor Circuit Low Frequency |
| P0338 | CKP Sensor Circuit High Frequency |
| P0339 | CKP Sensor Circuit Intermittent |
| P0340 | CKP Sensor Circuit |
| P0341 | CMP Sensor Circ. Performance |
| P0401 | EGR System Flow Insufficient |
| P0404 | EGR Valve Pintle Position |
| P0405 | EGR Valve Sensor Circuit Low Voltage |
| P0420 | TWC System Low Efficiency-Bank 1 |
| P0430 | TWC Low Efficiency-Bank 2 |
| P0440 | EVAP System |
| P0442 | EVAP System-Small Leak Detected |
| P0446 | EVAP System Canister Vent Blocked |
| P0452 | Fuel Tank Pressure Sensor-Low Voltage |
| P0453 | Fuel Tank Pressure Sensor-High Voltage |
| P0461 | Fuel Level Sensor Circuit Performance |
| P0462 | Fuel Level Sensor Circuit-Voltage Low |
| P0463 | Fuel Level Sensor Circuit-Voltage High |
| P0500 | Vehicle Speed Sensor Circuit |
| P0506 | IAC System-RPM Low |
| P0507 | IAC System-RPM High |
| P0602 | VCM Not Programmed |
| P1106 | MAP Sensor Circ. Intermittent High Voltage |
| P1107 | MAP Sensor Circ. Intermittent Low Voltage |
| P1111 | IAT Sensor Circ. Intermittent High Voltage |
| P1112 | IAT Sensor Circ. Intermittent Low Voltage |
| P1114 | ECT Sensor Circ. Intermittent Low Voltage |
| P1115 | ECT Sensor Circ. Intermittent High Voltage |
| P1121 | TP Sensor Voltage Intermittent High |
| P1122 | TP Sensor Voltage Intermittent Low |
| P1133 | HO2S Insufficient Switching-Bank 1, Sensor 1 |
| P1134 | HO2S Transition Time Ratio-Bank 1, Sensor 1 |
| P1153 | HO2S Insufficient Switching-Bank 2, Sensor 1 |
| P1154 | HO2S Transition Time Ratio-Bank 2, Sensor 1 |
| P1336 | CKP System Variation Not Learned |
| P1345 | CKP/CMP Sensor Correlation |
| P1351 | IC Circuit High Voltage |
| P1361 | IC Circuit Low Voltage |
| P1380 | EBCM/EBTCM DTC Detected Rough Road Data Unstable |
| P1381 | Misfire Detected-No EBCM/PCM/VCM Serial Data |
| P1404 | EGR Closed Pintle Position |
| P1441 | EVAP System Flow During Non-Purge |
| P1508 | IAC System-Low RPM |
| P1509 | IAC System-High RPM |
| P1621 | PCM/VCM Memory Performance |
| P1626 | Loss Of Serial Communication W/VTD |
| U1041 | Loss Of EBCM Communication |
| U1192 | Loss Of VTD-Pass-Lock(R) Communication |
| U1193 | Loss Of VIM Communication |
RENDER: 1.0x
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.