B0642 Trouble Code

View B0642 obd/2 error code description and symptoms. B0642 engine photo

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.

As long as the throttle plate remains closed, the idling speed and quality is controlled by the PCM via the idle control valve, and as can be seen from the above it should be clear that idle control on a gasoline engine is a complex affair. For instance, if the engine is started in sub-zero temperatures, the PCM will command the idling control valve to allow less air to enter the engine to enrich the air/fuel mixture to create a condition which is roughly analogous to how chokes worked on carburetted engines to control idling in cold weather.

B0642 Error Code Repair Process :

The rule of B0642 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 variable cam timing solenoid #1 circuit malfunction. Likewise, overriding the OBD B0642 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.

B0642 is a kind of Body Trouble Code

Auto body problems aren't always easy to spot. Diagnosing auto body problems sometimes requires a little know-how. In this section you'll find articles dedicated to teaching you how to diagnose auto body problems.

Common Causes of B0642

A common cause of code B0642 is the failure of Variable Cam Timing Solenoid #1 Circuit Malfunction, but there are several other possible causes as well, such as ;

Camshaft Position Sensor harness is open or shorted
Faulty starter motor
Intake air leaks
Insufficient cylinders compression

B0642 code for all cars

You can view according B0642 DTC for your car model. We selected several models to see obd2 solutions click and view it.

+B0642 Berkeley Foursome

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