B3979 Citroen Berlingo Ii OBD Code

OBD/2 B3979 error code description and symptoms.

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.

In most cases, the TCM is integrated into a single housing with the PCM. Nevertheless, the section of the module which controls (automatic) transmission function may be powered up separately. In any case, the TCM is typically powered using switched (only present with the ignition switch in the ON, start, or run position) voltage. This circuit is normally equipped with a fuse, fusible link, and/or a relay. Frequently, the PCM and TCM are powered using the same relay albeit by separate circuits. Access to a reliable vehicle information source will yield necessary details of the TCM power circuit for the specific vehicle in question.

B3979 Citroen Berlingo Ii Error Code Repair Process :

If your door handle switch circuit open 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 B3979 and engine control unit are in charge of monitoring a bunch of different door handle switch circuit open, and if they get a reading that's a little out of whack, up pops the check engine light.

Common Causes of Citroen Berlingo Ii B3979 OBD2 Code

A common cause of code B3979 is the failure of Door Handle Switch Circuit Open, 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
Faulty select solenoid
Engine Control Module (ECM)
Faulty Air fuel ratio (A/F) Sensor 1 Bank 1

B3979 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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B3979 Citroen Berlingo Ii OBD Code

B3979 Citroen Berlingo Ii Error Code Repair Process :

Common Causes of Citroen Berlingo Ii B3979 OBD2 Code

B3979 code for other Citroen cars