B1127 Chevrolet Silverado OBD Code

OBD/2 B1127 error code description and symptoms.

Throttle Position (TP) Sensor Intermittent The TP sensor circuit is monitored by the PCM for sudden TP rotation angle (or voltage) input change through the comprehensive component monitor (CCM). If during the last 80 warm-up cycles in key ON engine running the PCM detects a TP rotation angle (or voltage) changes beyond the minimum or maximum calibrated limit, a continuous diagnostic trouble code (DTC) is stored. Poor continuity through the TP sensor connectors Poor continuity through the TP harness Intermittent open or short inside the TP sensor While accessing the TP V PID on the scan tool, lightly tap on the TP sensor or wiggle the TP sensor connector and harness.

A good starting point in your diagnosis is checking all system fuses and fusible links. This can be done using the DVOM on the voltage setting. You will want to test the fuses with circuits loaded. Some fuses will appear normal until a load is placed on their respective circuit; at which point they will fail. This has been the cause of many 'phantom malfunctions'. Consult your vehicle information source for fuse and fusible link locations. If all fuses are in working order, you may want to check TCM relay operation by swapping identical relays. Usually the horn relay, starter relay, fuel pump relay, air conditioning clutch relay, and controller relays are similar enough in design to swap for diagnostic purposes.

B1127 Chevrolet Silverado Error Code Repair Process :

When you turn on the ignition, the Service Engine Soon or Check Engine B1127 light should flash briefly, indicating that the OBD system is ready to scan your vehicle for any malfunctions. After this brief flash, the light should stay off while you drive as long as no problems are detected. If servo motor potentiometer defrost circuit short to battery so, you'll be glad to know that your vehicle is equipped with an early warning system that could save you time, money, and fuel in addition to helping protect the servo motor potentiometer defrost circuit short to battery.

Common Causes of Chevrolet Silverado 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 ;

Damaged VCT phaser
Failures of clutch motion/travel sensors.
Fuel injectors may be faulty
Intake Valve Timing Control Solenoid Valve circuit poor electrical connection

B1127 Chevrolet Silverado OBD Code

B1127 Chevrolet Silverado Error Code Repair Process :

Common Causes of Chevrolet Silverado B1127 OBD2 Code

B1127 code for other Chevrolet cars