Possible Causes
| Possible Causes |
|---|
| (K157) MAF SENSOR SIGNAL CIRCUIT SHORT TO VOLTAGE |
| (K157) MAF SENSOR SIGNAL CIRCUIT SHORT TO GROUND |
| (K157) MAF SENSOR SIGNAL CIRCUIT OPEN OR HIGH RESISTANCE |
| (F343) FUSED MAIN RELAY OUTPUT CIRCUIT OPEN OR HIGH RESISTANCE |
| (K957) MAF SENSOR GROUND CIRCUIT OPEN OR HIGH RESISTANCE |
| SECONDARY AIR PUMP ASSEMBLY |
| POWERTRAIN CONTROL MODULE (PCM) |
Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. See DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure .