B0973 Pontiac Grand Safari OBD Code

OBD/2 B0973 error code description and symptoms.

Variable Cam Timing Over-advanced (Bank 1) The comprehensive component monitor (CCM) monitors the VCT position for an over-advanced camshaft timing.
The test fails when the camshaft timing exceeds a maximum calibrated value or remains in an advanced position. Cam timing improperly set No oil flow to the VCT piston chamber Low oil pressure VCT solenoid valve stuck closed Camshaft advance mechanism binding (VCT unit) B0973 DTC is a check of the VCT unit.

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.

B0973 Pontiac Grand Safari Error Code Repair Process :

If your transmission clutch interlock safety switch circuit failure check engine light is illuminated, it's best to take it in for diagnostic testing, which can feel like a hassle. Because while the lights vary in appearance from vehicle to vehicle, all have the same basic meaning: There's a problem with the car's emissions system. The on-board diagnostics system B0973 and engine control unit are in charge of monitoring a bunch of different transmission clutch interlock safety switch circuit failure, and if they get a reading that's a little out of whack, up pops the check engine light.

Common Causes of Pontiac Grand Safari B0973 OBD2 Code

A common cause of code B0973 is the failure of Transmission Clutch Interlock Safety Switch Circuit Failure, but there are several other possible causes as well, such as ;

Camshaft advance mechanism binding (VCT unit)
Faulty Intake Valve Timing Control Solenoid Valve
Ignition coils circuit poor electrical connection
Variable Valve Timing (VVT) circuit is open or shorted

B0973 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.

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

About Us | Contact | Privacy

B0973 Pontiac Grand Safari OBD Code

B0973 Pontiac Grand Safari Error Code Repair Process :

Common Causes of Pontiac Grand Safari B0973 OBD2 Code

B0973 code for other Pontiac cars