B3913 Fiat 127 OBD Code

OBD/2 B3913 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.

B3913 Fiat 127 Error Code Repair Process :

If your oil change lamp circuit failure 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 B3913 and engine control unit are in charge of monitoring a bunch of different oil change lamp circuit failure, and if they get a reading that's a little out of whack, up pops the check engine light.

Common Causes of Fiat 127 B3913 OBD2 Code

A common cause of code B3913 is the failure of Oil Change Lamp Circuit Failure, but there are several other possible causes as well, such as ;

Exhaust tube
Engine Control Module (ECM)
Faulty Mass Air Flow (MAF) sensor
Lack of fuel

B3913 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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B3913 Fiat 127 OBD Code

B3913 Fiat 127 Error Code Repair Process :

Common Causes of Fiat 127 B3913 OBD2 Code

B3913 code for other Fiat cars