B1127 Chevrolet K-20 OBD Code

OBD/2 B1127 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) B1127 DTC is a check of the VCT unit.

One example of this would be when an automatic vehicle in placed in gear. To prevent the added drag from the torque converter and transmission from reducing the idling speed, the PCM will command the idle control valve to allow more air to enter the engine, while at the same time, adjusting the injector pulse width to inject more fuel to suit the increased amount of air. Note that the idle air control valve is closed by the PCM when the throttle plate is opened to prevent excess air from entering the engine.

B1127 Chevrolet K-20 Error Code Repair Process :

The scent may B1127 signal oil or coolant leaking from their normally closed-loop systems, or it may indicate dangerous exhaust gases invading your car's interior. Car and truck exhaust contains toxic gases such B1127, so if the inside of your car servo motor potentiometer defrost circuit short to battery as if you were standing behind your car, get out and get it fixed. Fight the urge to take a little nap first. So sleepy. That's the carbon monoxide talking, friends. At least open a window on your way to the shop.

Common Causes of Chevrolet K-20 B1127 OBD2 Code

A common cause of code B1127 is the failure of Servo Motor Potentiometer Defrost Circuit Short To Battery, but there are several other possible causes as well, such as ;

Camshaft advance mechanism binding (VCT unit)
Failures of clutch motion/travel sensors.
Engine Control Module (ECM)
Clogged or faulty fuel injector (s)

B1127 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.

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B1127 Chevrolet K-20 OBD Code

B1127 Chevrolet K-20 Error Code Repair Process :

Common Causes of Chevrolet K-20 B1127 OBD2 Code

B1127 code for other Chevrolet cars