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U1236 Engine Trouble Code

U1236 Engine

When you check engine light came on code U1236 the reason should be Engine Light ON (or Service Engine Soon Warning Light). However your vehicle's manufacturer may have a different definition for the U1236 OBD-II Diagnostic Network (U) 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.

U1236 Code Meaning :

U 1 2 3 6
OBD-II Diagnostic Network (U) Trouble Code For Engine Fuel And Air Metering Ambient Air Temperature Sensor Circuit Low Cold Start Injector 1 Malfunction Reverse Input Circuit

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.

U1236 OBD-II Diagnostic Network (U) Trouble Code Description

U1236 engine trouble code is about Reverse Input Circuit.

Reason For U1236 Code

The reason of U1236 OBD-II Engine Trouble Code is Ambient Air Temperature Sensor Circuit Low.

U1236 DTCs may also be triggered by faults earlier down the line. For example, a dirty MAF sensor might be causing the car to overcompensate in its fuel-trim adjustments. As a result, oxygen sensors are likely to report fuel mixture problems.