C3149 Fiat 525 OBD Code

OBD/2 C3149 error code description and symptoms.

Catalytic converters must be warm before they can work properly. On a cold start the PCM provides a rich mixture to keep the cold engine running.
All that extra fuel goes into the catalytic converter. But the exhaust isn't very hot, because, ah, the engine is pretty cold. GM has employed several strategies to fire up the catalytic converter quicker and reduce cold start emissions. One way is to use a secondary air pump that pumps outside air directly into the catalytic converter.

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.

C3149 Fiat 525 Error Code Repair Process :

The rule of C3149 code when it comes to emissions-related vehicle repair is that any modification that changes the vehicle from a certified configuration to a non-certified configuration is considered tampering: this applies to both vehicle owners and repair facilities and is, therefore, a Federal offense. Replacing a catalyst with a straight pipe is one traditional example of air bag crash sensor #1 ground circuit short to battery. Likewise, overriding the OBD C3149 error in system through the use of high-tech defeat devices or non-certified computer chips, for example, would also be considered tampering. The OBD system may, however, be repaired back to its original certified configuration with certified performance chips or appropriate aftermarket parts.

Common Causes of Fiat 525 C3149 OBD2 Code

A common cause of code C3149 is the failure of Air Bag Crash Sensor #1 Ground Circuit Short To Battery, but there are several other possible causes as well, such as ;

Dirty Oil
Faulty Crankshaft Position Sensor (POS)
Fuel injector leaks
Failures of clutch motion/travel sensors.

C3149 is a kind of Chassis Trouble Code

Diagnosing chassis noises can be one of the most frustrating problems technicians face. Fortunately, manufacturers have engineered noise, vibration and harshness (NVH) diagnostic techniques and equipment to find the source of the noise.

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

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C3149 Fiat 525 OBD Code

C3149 Fiat 525 Error Code Repair Process :

Common Causes of Fiat 525 C3149 OBD2 Code

C3149 code for other Fiat cars