Diagnostic Trouble Codes for Chevrolet Cavalier (CNG) 1998

Diagnostic Trouble Codes

• DTC 12 Diagnostic System Ready
• DTC 13 Function Readiness
• DTC 14 ECT Sensor Circuit High Voltage
• DTC 15 ECT Sensor Circuit Low Voltage
• DTC 16 ECT Excessive Time to Closed Loop
• DTC 21 TP Sensor Circuit High
• DTC 22 TP Sensor Circuit Low
• DTC 23 IAT Sensor Circuit Low Voltage
• DTC 25 IAT Sensor Circuit High Voltage
• DTC 26 TP Sensor Performance
• DTC 27 Quad Driver Output
• DTC 31 EGR Valve Circuit
• DTC 32 MAP Sensor Performance
• DTC 33 MAP Sensor Circuit High Voltage
• DTC 34 MAP Sensor Circuit Low Voltage
• DTC 41 CKP Sensor Circuit
• DTC 42 HO2S Insufficient Activity Bank 1 Sensor 1
• DTC 44 HO2S Circuit Low Voltage Bank 1 Sensor 1
• DTC 45 HO2S Circuit High Voltage Bank 1 Sensor 1
• DTC 51 Gas Mass Sensor Circuit Low Frequency
• DTC 52 Gas Mass Sensor Circuit High Frequency
• DTC 53 Gas Mass Sensor Circuit Range Performance
• DTC 55 Fuel Trim System Lean
• DTC 56 Fuel Trim System Rich
• DTC 58 AF ECU Failure
• DTC 66 Fuel Pressure Sensor Circuit Low Voltage
• DTC 67 Fuel Pressure Sensor Circuit High Voltage