B0391 Trouble Code

View B0391 obd/2 error code description and symptoms. B0391 engine photo

The Camshaft Position sensor will signal the Engine Control Module when the #1 cylinder is ready for the spark plug to fire (top-dead-center on compression stroke). The ECM uses the information from this sensor to help calculate fuel delivery and spark timing.

On some transmissions, such as automated manual transmissions or automatic transmissions with manual mode, the GSP switch lets the TCM know whether or not the driver has selected automatic or manual function. On manual transmissions, the GSP switch informs the TCM which gear the driver is selecting, and may function as a neutral safety switch, depending on system design. The TCM also uses the gate select position switch to monitor transmission operation. For example, if the driver selects manual mode and selects 3rd gear on an automatic transmission, the TCM may monitor speed sensors to detect clutch and brake slippage.

B0391 Error Code Repair Process :

When you turn on the ignition, the Service Engine Soon or Check Engine B0391 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 shift solenoid e malfunction 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 shift solenoid e malfunction.

B0391 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 B0391

A common cause of code B0391 is the failure of Shift Solenoid E Malfunction, but there are several other possible causes as well, such as ;

Clogged or faulty fuel injector (s)
Failures of clutch motion/travel sensors.
Faulty oil control valve (OCV)
Open circuits caused by corrosion of electrical connectors.

B0391 code for all cars

You can view according B0391 DTC for your car model. We selected several models to see obd2 solutions click and view it.

+B0391 Chrysler Town And Country

+B0391 Bmw 1800

+B0391 Tvr 1600

+B0391 Benz 27

+B0391 Renault Type Xa

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

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