FREE REPAIR MANUALS & LABOR GUIDES 1982-2013 Vehicles
Courtesy of Operation CHARM: Car repair manuals for everyone.
Home >> Chevrolet >> 2007 >> Optra (CANADA) L4-2.0L >> Repair and Diagnosis >> A L L Diagnostic Trouble Codes ( DTC ) >> Testing and Inspection >> P Code Charts >> P0335

P0335




DTC P0335, P0336, or P0337

Diagnostic Instructions

* Perform the Diagnostic System Check - Vehicle Diagnostic System Check - Vehicle prior to using this diagnostic procedure.
* Strategy Based Diagnosis Strategy Based Diagnosis
* Diagnostic Procedure Instructions Diagnostic Procedure Instructions

DTC Descriptors
DTC P0335
- Crankshaft Position (CKP) Sensor Circuit

DTC P0336
- Crankshaft Position (CKP) Sensor Performance

DTC P0337
- Crankshaft Position (CKP) Sensor Circuit

Diagnostic Fault Information






Circuit/System Description

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. The CKP sensor circuits are connected directly to the ECM. The circuits between the CKP sensor and the ECM consist of the following circuits:

* The CKP sensor signal
* The low reference
* The shielded ground

Conditions for Running the DTC

* DTCs P0016, P0340, P0341, and P0342 are not set.
* The engine is cranking or running.
* The DTCs run continuously once the above conditions are met.

Conditions for Setting the DTC

P0335 or P0337

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

P0336

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

Action Taken When the DTC Sets

* DTCs P0335 and P0336 are Type B DTCs. DTC P0337 is a Type A DTC.
* The ECM will use the camshaft position (CMP) sensor for engine operation.

Conditions for Clearing the DTC

DTCs P0335 and P0336 are Type B DTCs. DTC P0337 is a Type A DTC.

Diagnostic Aids

The following conditions could also set the DTCs:

* Physical damage to the CKP sensor or the reluctor wheel
* Excessive play or looseness of the CKP sensor or the reluctor wheel
* Improper installation of the CKP sensor or the reluctor wheel
* Foreign material passing between the CKP sensor and the reluctor wheel
* Excessive air gap between the CKP sensor and the reluctor wheel

Reference Information

Schematic Reference

Engine Controls Schematics (w/Throttle Actuator Controls) Electrical DiagramsEngine Controls Schematics (w/o Throttle Actuator Control) Electrical Diagrams

Connector End View Reference
* Engine Controls Connector End Views (w/ Throttle Actuator Control) Engine Controls Connector End Views (w/ Throttle Actuator Control)Engine Controls Connector End Views (w/o Throttle Actuator Control) Engine Controls Connector End Views (w/o Throttle Actuator Control)
* Engine Control Module Connector End Views (w/ Throttle Actuator Control) Engine Control Module Connector End Views (w/ Throttle Actuator Control)Engine Control Module Connector End Views (w/o Throttle Actuator Control) Engine Control Module Connector End Views (w/o Throttle Actuator Control)

Description and Operation

Electronic Ignition (EI) System Description Electronic Ignition (EI) System Description

Electrical Information Reference
* Circuit Testing Circuit Testing
* Connector Repairs Connector Repairs
* Testing for Intermittent Conditions and Poor Connections Testing for Intermittent Conditions and Poor Connections
* Wiring Repairs Wiring Repairs

DTC Type Reference

Powertrain Diagnostic Trouble Code (DTC) Type Definitions Powertrain Diagnostic Trouble Code (DTC) Type Definitions

Scan Tool Reference
* Scan Tool Data List (w/ Throttle Actuator Control) Scan Tool Data List (w/ Throttle Actuator Control)Scan Tool Data List (w/o Throttle Actuator Control) Scan Tool Data List (w/o Throttle Actuator Control)
* Scan Tool Data Definitions (w/ Throttle Actuator Control) Scan Tool Data Definitions (w/ Throttle Actuator Control)Scan Tool Data Definitions (w/o Throttle Actuator Control) Scan Tool Data Definitions (w/o Throttle Actuator Control)
* Scan Tool Output Controls (w/ Throttle Actuator Control) Scan Tool Output Controls (w/ Throttle Actuator Control)Scan Tool Output Controls (w/o Throttle Actuator Control) Scan Tool Output Controls (w/o Throttle Actuator Control)

Circuit/System Verification

1. Attempt to start the engine. Observe the DTC information with a scan tool. DTC P0335 and P0336 should not set.
2. Move related harnesses/connectors of the CKP sensor and verify the engine does not stumble, stall, or change engine speed.
3. 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 Data List.

Circuit/System Testing

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 more 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.

Component Testing

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. Connect a DMM between the signal circuit and the low reference circuit of the CKP sensor.
3. Test for 460-620 ohms between the signal circuit and low reference circuit.

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

4. Disconnect the fuel pump relay.
5. Set the DMM to the AC voltage scale.
6. While cranking the engine, test for more than 1.4 ACV between the signal circuit and low reference circuit of the CKP sensor.

• If less than 1.4 ACV, replace the CKP sensor.

Repair Instructions

Perform the Diagnostic Repair Verification Verification Tests after completing the diagnostic procedure.

* Crankshaft Position Sensor Replacement Service and Repair
* Control Module References Control Module References for engine control module replacement, setup, and programming

pro multis Credits:Operation CHARM About Operation CHARM