P0388

Tests 1 - 3:

Tests 4 - 8:

Tests 9 - 13:

SYMPTOM
P0388 - CRANKSHAFT POSITION SENSOR SUPPLY VOLTAGE TOO HIGH

WHEN MONITORED
Engine running.

SET CONDITION
The crankshaft position sensor indicates no engine speed or position signal to ECM.

POSSIBLE CAUSES
- DTC not equal to freeze frame DTC
- CKP sensor ground circuit open
- CKP wiring harness intermittent defect
- CKP sensor signal circuit open
- CKP sensor signal circuit shorted to ground
- 5 volt supply circuit shorted to ground
- 5 volt supply circuit open
- 5 volt supply circuit shorted to voltage
- Engine Control Module