| Description | This DTC sets when the secondary on board diagnostic module C (SOBDMC) detects a difference between the calculated and actual engine speed of greater than 500 RPM. | ||
|---|---|---|---|
| Possible Causes | Communication error CAN circuit Damaged CKP sensor Damaged PCM Damaged SOBDMC | ||
| Diagnostic Aids | |||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| Vehicles that start | GO to PINPOINT TEST JH: ENGINE SPEED SIGNAL . | ||
| Vehicles that do not start | GO to PINPOINT TEST JD: CRANKSHAFT POSITION (CKP) SENSOR . | ||
P0726 - ENGINE SPEED INPUT CIRCUIT RANGE/PERFORMANCE