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B1231 Engine Trouble Code

B1231 Engine

When you check engine light came on code B1231 the reason should be . However your vehicle's manufacturer may have a different definition for the B1231 OBD-II Diagnostic Body (B) Trouble Code. So you should chech it on our car models.

Theoretically you can drive for a few weeks or even months with a broken MAF sensor. You will notice a decrease in gas mileage and over time the car will eventually start stalling a lot. At a shop, the replacement cost is between $200-$300 depending on the car, but that's usually the cost of parts because the labor is relatively simple.

B1231 Code Meaning :

B 1 2 3 1
OBD-II Diagnostic Body (B) Trouble Code For Engine Fuel And Air Metering Ambient Air Temperature Sensor Circuit Low Cold Start Injector 1 Malfunction Glow Plug/Heater Circuit 'A' Malfunction

The catalytic converter has an oxygen sensor in front and behind it. When the vehicle is warm and running in closed loop mode, the upstream oxygen sensor waveform reading should fluctuate.

B1231 OBD-II Diagnostic Body (B) Trouble Code Description

B1231 engine trouble code is about Glow Plug/Heater Circuit 'A' Malfunction.

Reason For B1231 Code

The reason of B1231 OBD-II Engine Trouble Code is Ambient Air Temperature Sensor Circuit Low.

B1231 DTC specifically refers to the camshaft (cam) timing. In this case, if the cam timing is over-retarded, the engine light will be illluminated and the code will be set.