P0339 - Crankshaft Position Sensor A Circuit Intermittent
WARNING: This page does not describe the selected car, but rather 27 other vehicles, including the 2021 Lincoln Navigator, 2021 Lincoln Nautilus, 2021 Lincoln Corsair, 2021 Lincoln Aviator, and 2021 Ford Transit-350 HD. However, it is still accessible from the selected car via links, so may be relevant.
DTC DESCRIPTION P0339 - CRANKSHAFT POSITION SENSOR A CIRCUIT INTERMITTENT
| Description: |
This DTC sets when several erratic profile ignition pickup (PIP) pulses have occurred in the crankshaft position (CKP) sensor signal within a calibrated time period when the camshaft speed exceeds the equivalent speed of engine idle or the starter motor is engaged. |
| Possible Causes: |
- CKP+ circuit intermittent open (VR type)
- CKP- circuit intermittent open (VR type)
- CKP circuit intermittent open (Hall effect type)
- VREF circuit intermittent open (Hall effect type)
- SIGRTN circuit intermittent open (Hall effect type)
- CKP+ circuit intermittent short to voltage (VR type)
- CKP- circuit intermittent short to voltage (VR type)
- CKP circuit intermittent short to voltage (Hall effect type)
- VREF circuit intermittent short to voltage (Hall effect type)
- SIGRTN circuit intermittent short to voltage (Hall effect type)
- CKP+ circuit intermittent short to ground (VR type)
- CKP- circuit intermittent short to ground (VR type)
- CKP circuit intermittent short to ground (Hall effect type)
- VREF circuit intermittent short to ground (Hall effect type)
- SIGRTN circuit intermittent short to ground (Hall effect type)
- CKP sensor incorrectly installed
- Damaged CKP sensor
- Incorrect, damaged or corroded connections
- Arcing secondary ignition components (coil, wires and plugs)
- Arcing relays or other high current devices (cooling fan or starter motor)
- On board 2 way radio transceiver
- Radio frequency interference or electromagnetic interference from an external source
- Incorrectly grounded high power aftermarket equipment
|
| Diagnostic Aids: |
|
| Application |
Key On Engine Off |
Key On Engine Running |
Continuous Memory |
| All |
GO to Pinpoint Test JD. |