B3969 Chevrolet Apv OBD Code

OBD/2 B3969 error code description and symptoms.

Vehicle Speed Sensor (VSS) Intermittent Indicates the powertrain control module (PCM) detected an error in the vehicle speed information. Vehicle speed data is received from either the vehicle speed sensor (VSS), transfer case speed sensor (TCSS), anti-lock brake system (ABS) control module, generic electronic module (GEM), or central timer module (CTM). This DTC is set the same way as B3969. However, it is intended to flash the transmission control indicator lamp (TCIL) for first time VSS circuit error/malfunctions. Refer to possible causes for B3969

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.

B3969 Chevrolet Apv Error Code Repair Process :

The rule of B3969 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 wiper brake/run relay circuit short to ground. Likewise, overriding the OBD B3969 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 Chevrolet Apv B3969 OBD2 Code

A common cause of code B3969 is the failure of Wiper Brake/Run Relay Circuit Short To Ground, but there are several other possible causes as well, such as ;

EVAP system hose leaking
Faulty Variable Camshaft Timing (VCT) position solenoid
Erratic camshaft position due to low oil pressure
Fuel injectors may be faulty

B3969 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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B3969 Chevrolet Apv OBD Code

B3969 Chevrolet Apv Error Code Repair Process :

Common Causes of Chevrolet Apv B3969 OBD2 Code

B3969 code for other Chevrolet cars