The crankshaft position (CKP) sensor signal indicates the crankshaft speed and position. The CKP sensor produces an AC voltage of different amplitude and frequency. The frequency depends on the velocity of the crankshaft, and the AC voltage output depends on the crankshaft position and battery voltage. The CKP sensor works in conjunction with a 58X reluctor wheel attached to the crankshaft. The engine control module (ECM) can synchronize the ignition timing, fuel injector timing, and spark knock control based on the CKP and the camshaft position (CMP) sensor inputs. The CKP sensor is also used to detect misfire and tachometer display.

DTC P0335

The ECM does not detect a signal from the CKP sensor.

DTC P0336

The ECM detects an incorrect number of CKP reference pulses for 10 consecutive crankshaft revolutions.

DTCs P0335 and P0336 are Type B DTCs.

The following conditions could also set the DTCs:

Schematic Reference

Engine Controls Schematics

Connector End View Reference

Electrical Information Reference

DTC Type Reference

Powertrain Diagnostic Trouble Code (DTC) Type Definitions

Scan Tool Reference

Important: If you were sent here from Engine Cranks but Does Not Run, proceed to Circuit/System Testing.

1. Attempt to start the engine, observe the DTC information with a scan tool. DTC P0335 and P0336 should not set.
2. Observe the Engine Speed parameter while cranking the engine. The scan tool should indicate an engine speed greater than 0 RPM.
3. Move related harnesses/connectors of the CKP sensor and verify the engine does not stumble, stall, or change engine speed.
4. If the vehicle passes the Circuit/System Verification test, then operate the vehicle within the conditions for running the DTC. You may also operate the vehicle within the conditions that are captured in the Freeze Frame/Failure Records List.

Important: If the CKP sensor lead is damaged in any way, replace the CKP sensor.

1. Ignition OFF, disconnect the harness connector of the CKP sensor.
2. Ignition ON, verify that 2-3 volts is available on the signal circuit and the low reference circuit.

⇒	If less than the specified range, test the applicable circuit for a short to ground or an open/high resistance. If the circuits/connections test normal, replace the ECM.

⇒	If greater than the specified range, test the applicable circuit for a short to voltage. If the circuits/connections test normal, replace the ECM.

3. If all circuits/connections test normal, test or replace the CKP sensor.

1. Ignition OFF, disconnect the harness connector of the CKP sensor.

Important: If the CKP sensor lead is damaged in any way, replace the CKP sensor.

2. Test for 500-700 ohms between the signal circuit and low reference circuit of the CKP sensor.

⇒	If the resistance is not within the specified range, replace the CKP sensor.

3. Disconnect the fuel pump relay.
4. Set the DMM to the AC voltage scale.
5. While cranking the engine, test for greater than 500 mVAC between the signal circuit and low reference circuit of the CKP sensor.

⇒	If less than the specified value, replace the CKP sensor.

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.