Possible Causes
WARNING: This page is about a different car, the 2009 Jeep Patriot and 2009 Jeep Compass. However, it is still accessible from the selected car via links, so may be relevant.
| Possible Causes |
|---|
| (K157) MAF SENSOR SIGNAL CIRCUIT SHORTED TO VOLTAGE |
| (K157) MAF SENSOR SIGNAL CIRCUIT SHORTED TO THE (F343) FUSED ASD/MAIN RELAY OUTPUT CIRCUIT |
| (K157) MAF SENSOR SIGNAL 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 .