C3938 Holden Rc Colorado OBD Code

OBD/2 C3938 error code description and symptoms.

Output Shaft Speed sensor circuit intermittent failure The output shaft speed sensor signal to the PCM is irregular or interrupted.
Harness connector not properly seated Harness intermittently shorted, or open Harness connector damaged OSS sensor damaged, or not installed properly Verify harness and connector integrity Verify OSS sensor proper installation.

At this point we are assuming that the fuses and relays are good. You will need to locate the PCM/TCM and the power input signal circuit using your vehicle information source. Unplug the connector from the PCM/TCM, place the ignition switch in the ON position, and probe the appropriate circuit with the positive test lead of the DVOM.

C3938 Holden Rc Colorado Error Code Repair Process :

The rule of C3938 code when it comes to emissions-related vehicle repair is that any modification that changes the vehicle from a certified configuration to a non-certified configuration is considered tampering: this applies to both vehicle owners and repair facilities and is, therefore, a Federal offense. Replacing a catalyst with a straight pipe is one traditional example of dc-dc converter failure. Likewise, overriding the OBD C3938 error in system through the use of high-tech defeat devices or non-certified computer chips, for example, would also be considered tampering. The OBD system may, however, be repaired back to its original certified configuration with certified performance chips or appropriate aftermarket parts.

Common Causes of Holden Rc Colorado C3938 OBD2 Code

A common cause of code C3938 is the failure of DC-DC Converter Failure, but there are several other possible causes as well, such as ;

Camshaft Position Sensor harness is open or shorted
Faulty starter motor
Faulty Variable Camshaft Timing (VCT) position solenoid
Intake Valve Timing Control Solenoid Valve harness is open or shorted

C3938 is a kind of Chassis Trouble Code

Diagnosing chassis noises can be one of the most frustrating problems technicians face. Fortunately, manufacturers have engineered noise, vibration and harshness (NVH) diagnostic techniques and equipment to find the source of the noise.

Engine OBD 2 Codes website is a freeware resource center for engine trouble codes.

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C3938 Holden Rc Colorado OBD Code

C3938 Holden Rc Colorado Error Code Repair Process :

Common Causes of Holden Rc Colorado C3938 OBD2 Code

C3938 code for other Holden cars