Volt

DTC P0335 or P0336

The crankshaft position sensor detects crankshaft speed and position. The crankshaft position sensor produces an alternating current (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 crankshaft position sensor works in conjunction with a 58 tooth reluctor wheel attached to the crankshaft. The engine control module (ECM) can synchronise the ignition timing, fuel injector timing, and spark knock control based on the crankshaft position sensor and the camshaft position sensor inputs. The crankshaft position sensor is also used to detect misfire.

P0335 Condition 1

Condition 2

Condition 3

P0336 Condition 1

Condition 2

Condition 3

Condition 4

The DTCs run continuously once the above conditions are met.

P0335

DTC P0335 sets if one of the conditions listed below occur:

P0336

DTC P0336 sets if one of the conditions listed below occur:

DTCs P0335 and P0336 are Type B DTCs.

The following conditions may also set the DTCs:

Schematic Reference

Engine Controls Schematics

Connector End View Reference

Component Connector End Views

Description and Operation

Electrical Information Reference

DTC Type Reference

Powertrain Diagnostic Trouble Code (DTC) Type Definitions

Scan Tool Reference

Control Module References for scan tool information

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

1. Vehicle in Service Mode, observe the DTC information with a scan tool. Verify DTCs P0651, P2618, or P2619 are not set.

⇒	If a DTC is set, refer to Diagnostic Trouble Code (DTC) List - Vehicle for further diagnosis.

2. Attempt to start the engine. Observe the scan tool Engine Speed parameter. The scan tool should indicate an engine speed greater than 0 RPM.
3. Attempt to start the engine. Observe the scan tool HPCM Engine Speed parameter. The scan tool should indicate an engine speed greater than 0 RPM.

⇒	If the above condition exists, refer to DTCs P2618 or P2619 for further diagnosis.

4. Move the related harnesses/connectors of the B26 crankshaft position sensor and verify the engine does not stumble, stall, or change engine speed.

⇒	If the above condition exists, repair the harness/connectors as necessary.

5. Attempt to start the engine. Observe the DTC information with a scan tool. DTC P0335 and P0336 should not set.
6. Operate the vehicle within the conditions for running the DTC to verify the DTC does not reset. You may also operate the vehicle within the conditions that you observed from the freeze frame/failure records data.

1. Vehicle OFF. Disconnect the harness connector at the B26 crankshaft position sensor.
2. Vehicle OFF, all systems OFF. It may take 2 minutes for all vehicle systems to power down. Test for less than 5 Ω between the low reference circuit terminal 2 and ground.

⇒	If greater than the specified range, test the circuit for an open/high resistance. If the circuit tests normal, replace the K20 ECM.

3. Vehicle in Service Mode, test for 4.8-5.2 V between the 5 V reference circuit terminal 1 and ground.

⇒	If less than the specified range, test the 5 V reference circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the K20 ECM.

⇒	If greater than the specified range, test the 5 V reference circuit for a short to voltage. If the circuit tests normal, replace the K20 ECM.

4. Test for 4.8-5.2 V between the signal circuit terminal 3 and ground.

⇒	If less than the specified range, test the signal circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the K20 ECM.

⇒	If greater than the specified range, test the signal circuit for a short to voltage. If the circuit tests normal, replace the K20 ECM.

5. Vehicle OFF, connect a 3 A fused jumper wire to the signal circuit terminal 3.
6. Vehicle ON, momentarily touch the end of the fused jumper wire to ground while monitoring the scan tool Crankshaft Position Sensor Active Counter. The parameter should increment.

⇒	If the parameter does not increment, replace the K20 ECM.

7. If all circuits test normal, replace the B26 Crankshaft Position Sensor.

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.