B3966 Trouble Code

View B3966 obd/2 error code description and symptoms. B3966 engine photo

The Transmission Range Sensor (also referred to as the PRNDL input an/or neutral safety switch) tells the transmission control module (TCM) an the engine control module (PCM) that the transmission is in park, reverse, neutral, drive, low, 2nd, 3rd etc. It is attached directly to the manual valve of transmission, so when the shift lever is moved from park to drive, the Transmission Range Sensor communicates this critical information to the above mentioned vehicle control module systems.

To check for an open circuit, trace along the length of the transmission control circuit, checking for breaks in the wiring. Repair any broken wiring and make sure all connectors are fully seated and locked.Pay close attention to connectors, looking for corrosion, bent or broken pins, or moisture in the connector. Repair any connector issues even if they are not specifically part of the transmission control circuit as they may serve a function in providing power to the transmission control circuit.

B3966 Error Code Repair Process :

If your seat belt switch circuit short to ground 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 B3966 and engine control unit are in charge of monitoring a bunch of different seat belt switch circuit short to ground, and if they get a reading that's a little out of whack, up pops the check engine light.

B3966 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 B3966

A common cause of code B3966 is the failure of Seat Belt Switch Circuit Short To Ground, but there are several other possible causes as well, such as ;

Air fuel ratio (A/F) Sensor 1 Bank 1 harness is open or shorted
Damaged camshaft position (CMP) sensor
Incorrect fuel filler cap used
1Camshaft Position Sensor circuit poor electrical connection

B3966 code for all cars

You can view according B3966 DTC for your car model. We selected several models to see obd2 solutions click and view it.

+B3966 Daewoo Matiz

+B3966 Peugeot 208 Ii

+B3966 Simca 1309

+B3966 Rover 2300

+B3966 Mercedes Clk 270

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

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