DTC Advanced Diagnostics: P0339 (2.0L Engine) (2024 2025)
DTC P0339 : Crankshaft Position (CKP) Sensor Circuit Intermittent Interruption
General Description
The crankshaft position (CKP) sensor consists of a pulse plate and a semiconductor that detects rotor position. When the engine starts, the pulse plate turns and the magnetic flux in the semiconductor device changes. The changes of magnetic flux are converted into pulsing signals to the powertrain control module (PCM). The CKP sensor detects injection/ignition timing for each cylinder and the engine speed. If an abnormal amount of pulsing signals from the CKP sensor are detected, the PCM detects a malfunction and stores a DTC.
Monitor Execution, Sequence, Duration, DTC Type
| Execution | Continuous |
| Sequence | None |
| Duration | 0.5 seconds or more |
| DTC Type | One drive cycle, MIL on |
Enable Conditions
| Condition | Minimum | Maximum |
|---|---|---|
| Vehicle speed [Vehicle Speed] | 1 mph (1 km/h) | 15 mph (25 km/h) |
| Other | Starter in active or engine speed [Engine Speed] more than 600 rpm | |
[ ]: HDS Parameter
Malfunction Threshold
Any of the conditions is met continuously at least 8 times:
- The engine speed calculated from tooth time period is lower than 20 rpm or higher than 12, 000 rpm.
- More than 60 tooth counts between detected gaps.
- The ratio of current tooth time to previous tooth time exceeds 1.5 - 2 if gap is not expected.
- The ratio of current tooth time to previous tooth time exceeds 3.38 - 8 if gap is expected.
Possible Cause
The causes shown may not be a complete list of all potential problems, and it is possible that there may be other causes.
- CKP sensor loose connection or poor contact
- Change of gap between CKP sensor and pulse plate (eccentric pulse plate, large gap, loose CKP sensor mounting, CKP sensor movement)
- Noise disturbance by starter
- Noise disturbance by drive pulse for injection and ignition
- Pulse plate defection
- CKP sensor failure
Diagnosis Details
Conditions for setting the DTC
When a malfunction is detected, the MIL comes on and a Pending DTC, a Confirmed DTC, the freeze data, and the on-board snapshot are stored in the PCM memory.
Conditions for clearing the DTC
The MIL is cleared if the malfunction does not return in three consecutive trips in which the diagnostic runs. The MIL, the Pending DTC, the Confirmed DTC, the freeze data, and the on-board snapshot can be cleared with the scan tool clear command.