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 MANUALSCHEVROLET1998SUBURBAN K2500, 7.4 J, PART TIMEREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 25 (ENGINE CONTROLS - TESTS W/CODES - 4.3L)SELF-DIAGNOSTIC SYSTEMTROUBLE CODE DEFINITIONS
1998 Chevrolet Suburban K2500, 7.4 J, Part Time
Trouble Code Definitions
1998 Chevrolet Suburban K2500, 7.4 J, Part TimeSECTION Trouble Code Definitions
WARNING: This page is about a different car, the 1997 GMC Savana, 1997 Chevrolet Chevy Van, and 1997 Chevrolet Chevy Express. However, it is still accessible from the selected car via links, so may be relevant.
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 Sesnor 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 |
| 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 |
| P0301 | Cyl. No. 1 Misfire Detected |
| P0302 | Cyl. No. 2 Misfire Detected |
| P0303 | Cyl. No. 3 Misfire Detected |
| P0304 | Cyl. No. 4 Misfire Detected |
| P0305 | Cyl. No. 5 Misfire Detected |
| P0306 | Cyl. No. 6 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 Circuit Performance |
| P0401 | EGR System Performance |
| P0420 | TWC System Low Efficiency-Bank 1 |
| P0430 | TWC Low Efficiency-Bank 2 |
| P0441 | EVAP System Incorrect/No Flow Purge Flow |
| P0500 | Vehicle Speed Sensor Circuit |
| P0506 | Idle RPM Low (IAC Responding) |
| P0507 | Idle RPM High (IAC Responding) |
| P1106 | MAP Sensor Circuit Intermittentl High Voltage |
| P1107 | MAP Sensor Circuit Intermittentl Low Voltage |
| P1111 | IAT Sensor Circuit Intermittent High Voltage |
| P1112 | IAT Sensor Circuit Intermittent Low Voltage |
| P1114 | ECT Sensor Circuit Intermittent Low Voltage |
| P1115 | ECT Sensor Circuit Intermittent High Voltage |
| P1121 | TP Sensor Voltage Intermittentl High |
| P1122 | TP Sensor Voltage Intermittentl 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 |
| P1345 | CKP/CMP Sesnor Correlation |
| P1351 | IC Circuit High Voltage |
| P1361 | IC Circuit Low Voltage |
| P1380 | EBCM DTC Detected Rough Road Data Unusable |
| P1381 | Misfire Detected-No EBCM/PCM/VCM Serial Data |
| P1415 | AIR System-Bank 1 |
| P1416 | AIR System-Bank 2 |
| P1441 | EVAP System Flow During Non-Purge |
| P1508 | IAC System-Low RPM |
| P1509 | IAC System-High RPM |
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.