Possible Causes
| Possible Causes |
|---|
| (K21) IAT SIGNAL CIRCUIT SHORTED TO BATTERY VOLTAGE |
| (K21) IAT SIGNAL CIRCUIT OPEN |
| (K900) SENSOR GROUND CIRCUIT OPEN |
| IAT SENSOR |
| PCM |
Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. See DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure .