B3291 Fiat Croma 2 OBD Code

OBD/2 B3291 error code description and symptoms.

HO2S Sensor Circuit Malfunction (HO2S-11) During testing the HO2S Heaters are checked for opens/shorts and excessive current draw.
The test fails when current draw exceeds a calibrated limit and/or an open or short is detected. Short to VPWR in harness or HO2S. Water in harness connector. Open VPWR circuit. Open GND circuit. Low battery voltage. Corrosion or poor mating terminals and wiring Damaged HO2S heater. Damaged PCM.

A good starting point in your diagnosis is checking all system fuses and fusible links. This can be done using the DVOM on the voltage setting. You will want to test the fuses with circuits loaded. Some fuses will appear normal until a load is placed on their respective circuit; at which point they will fail. This has been the cause of many 'phantom malfunctions'. Consult your vehicle information source for fuse and fusible link locations. If all fuses are in working order, you may want to check TCM relay operation by swapping identical relays. Usually the horn relay, starter relay, fuel pump relay, air conditioning clutch relay, and controller relays are similar enough in design to swap for diagnostic purposes.

B3291 Fiat Croma 2 Error Code Repair Process :

For sgc (cam position) sensor circuit malfunction/ crankshaft position - camshaft position correlation check engine light is perhaps the most troubling of lights because it could mean so many different things, from you didn't screw the gas cap on tightly enough to look out for pistons flying through the hood and into the stratosphere. The easiest way to find out what this light is telling you is to hook your vehicle up to a scan tool. B3291 error code diagnostic tool looks a little like an oversized calculator and plugs into a communication port inside the car. After you instruct it to perform the scan, it speaks sgc (cam position) sensor circuit malfunction/ crankshaft position - camshaft position correlation with your car's computers to find out exactly what's prompting the light to turn on.

Common Causes of Fiat Croma 2 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 ;

Exhaust tube
EVAP system hose leaking
Air fuel ratio (A/F) Sensor 1 Bank 1 circuit poor electrical connection
Intake Valve Timing Control Solenoid Valve circuit poor electrical connection

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 Croma 2 OBD Code

B3291 Fiat Croma 2 Error Code Repair Process :

Common Causes of Fiat Croma 2 B3291 OBD2 Code

B3291 code for other Fiat cars