B0343 Fiat 3.5 OBD Code

OBD/2 B0343 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) B0343 DTC is a check of the VCT unit.

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.

B0343 Fiat 3.5 Error Code Repair Process :

If your vehicle failed a B0343 test and the B0343 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 output speed sensor range/performance 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 output speed sensor range/performance: 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 3.5 B0343 OBD2 Code

A common cause of code B0343 is the failure of Output Speed Sensor Range/Performance, but there are several other possible causes as well, such as ;

Camshaft advance mechanism binding (VCT unit)
Erratic camshaft position due to low oil pressure
Faulty ignition coil (s)
Faulty variable valve timing (VVT)

B0343 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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B0343 Fiat 3.5 OBD Code

B0343 Fiat 3.5 Error Code Repair Process :

Common Causes of Fiat 3.5 B0343 OBD2 Code

B0343 code for other Fiat cars