B3291 Fiat 10-12 OBD Code

OBD/2 B3291 error code description and symptoms.

The Throttle Position sensor signals the Engine Control Module as to the current position of the engine throttle valve.
The current throttle valve opening is based on the driver's input from the gas pedal. The ECM uses the information from this sensor to help calculate fuel delivery and spark timing.

At this point we are assuming that the fuses and relays are good. You will need to locate the PCM/TCM and the power input signal circuit using your vehicle information source. Unplug the connector from the PCM/TCM, place the ignition switch in the ON position, and probe the appropriate circuit with the positive test lead of the DVOM.

B3291 Fiat 10-12 Error Code Repair Process :

If your vehicle failed a B3291 test and the B3291 Check Engine Light is NOT on, chances are you have a problem with the OBDII system, a burned out MIL lamp, or a faulty catalytic converter. The converter is essentially an afterburner that cleans up the exhaust after it exits the engine. The OBDII system uses sgc (cam position) sensor circuit malfunction/ crankshaft position - camshaft position correlation a ownstream oxygen sensor to monitor the efficiency of the converter, and it should detect a drop in converter efficiency if the converter has been contaminated or is failing (ignition misfiring, leaky exhaust valves, and oil burning can all damage the converter). What you want to look sgc (cam position) sensor circuit malfunction/ crankshaft position - camshaft position correlation: Any conditions that might cause ignition misfire, an overly rich or lean fuel condition, or loss of compression. Use your OBD Express DIY to look at the oxygen sensor outputs, coolant temperature, airflow, calculated engine load, and inlet air temperature.

Common Causes of Fiat 10-12 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 ;

Damaged ECM
Exhaust gas leaks
Air fuel ratio (A/F) Sensor 1 Bank 1 circuit poor electrical connection
Continuous oil flow to the VCT piston chamber

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 10-12 OBD Code

B3291 Fiat 10-12 Error Code Repair Process :

Common Causes of Fiat 10-12 B3291 OBD2 Code

B3291 code for other Fiat cars