B3291 Fiat 500x OBD Code

OBD/2 B3291 error code description and symptoms.

Variable Cam Timing Over-advanced (Bank 1) The comprehensive component monitor (CCM) monitors the VCT position for an over-advanced camshaft timing.
The test fails when the camshaft timing exceeds a maximum calibrated value or remains in an advanced position. Cam timing improperly set No oil flow to the VCT piston chamber Low oil pressure VCT solenoid valve stuck closed Camshaft advance mechanism binding (VCT unit) B3291 DTC is a check of the VCT unit.

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.

B3291 Fiat 500x Error Code Repair Process :

If your sgc (cam position) sensor circuit malfunction/ crankshaft position - camshaft position correlation 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 B3291 and engine control unit are in charge of monitoring a bunch of different sgc (cam position) sensor circuit malfunction/ crankshaft position - camshaft position correlation, and if they get a reading that's a little out of whack, up pops the check engine light.

Common Causes of Fiat 500x B3291 OBD2 Code

A common cause of code B3291 is the failure of SGC (Cam Position) Sensor Circuit Malfunction/ Crankshaft Position - Camshaft Position Correlation, but there are several other possible causes as well, such as ;

Camshaft advance mechanism binding (VCT unit)
EVAP system hose leaking
Air fuel ratio (A/F) Sensor 1 Bank 1 circuit poor electrical connection
Improper ignition timing

B3291 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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B3291 Fiat 500x OBD Code

B3291 Fiat 500x Error Code Repair Process :

Common Causes of Fiat 500x B3291 OBD2 Code

B3291 code for other Fiat cars