DTC Advanced Diagnostics: P0335
DTC P0335:Crankshaft Position (CKP) Sensor No Signal

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 no 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 second 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
No input signals from the CKP sensor are detected while 3 camshaft revolutions are reached.

Possible Cause
NOTE: 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 CRK line short to ground
CKP sensor CRK line short to power
CKP sensor CRK line open
CKP sensor VCC line noise interrupted
CKP sensor SG line noise interrupted
Large gap between CKP sensor and pulse plate
CKP sensor failure
PCM internal circuit failure

Confirmation Procedure
Operating Condition
1.
Start the engine. Hold the engine speed [Engine Speed] at 3,000 rpm without load (in neutral) until the radiator fan comes on.
2.
Drive the vehicle at vehicle speed [Vehicle Speed] 15 mph (25 km/h) or less for at least 1 second.
Drive the vehicle in this manner only if the traffic regulations and ambient conditions allow.

Diagnosis Details
Conditions for setting the DTC
When a malfunction is detected, the MIL comes on and a Pending DTC, a Confirmed DTC, and the freeze data 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, and the freeze data can be cleared with the scan tool Clear command.