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P2138 Engine Code Repair

Meaning of P2138 engine trouble code is a kind of powertrain trouble code and P2138 code can be about replacing a broken oxygen sensor can eventually lead to a busted catalytic convertor which can cost upwards of $2,200. Taking your car into a shop will cost you around $210 depending on the car. However, an oxygen sensor is easy to replace on many cars and is usually detailed in the owner's manual. If you know where the sensor is, you only have to unclip the old sensor and replace it with a new one. Regardless of how you approach it, you should get this fixed right away.

P2138 Fault Symptoms :

  1. Check engine light comes on
  2. Engine stalling or misfiring
  3. Engine performance issues
  4. Car not starting

If one of these reasons for P2138 code is occuring now you should check P2138 repair processes.
Now don't ask yourself; What should you do with P2138 code ?
The solution is here :

P2138 Possible Solution:

P2138 Engine

Excessive air inflow can be caused by a vacuum leak, a dirty sensor or, an exhaust gas recirculation valve not closing properly. If the problem is not enough fuel, the culprit may be dirty injectors or fuel filters, a weak fuel pump or a leaky fuel pressure regulator. The lean fuel mix error may be accompanied by rough idling, engine misfires, hesitation during acceleration and overall poor engine performance.

P2138 Code Meaning :

P
OBD-II Diagnostic Powertrain (P) Trouble Code For Engine

2
Fuel And Air Metering (Injector Circuit Malfunctions Only)

1
Ambient Air Temperature Sensor Circuit Low

3
Turbocharger Boost Sensor A Circuit Low

8
Shift/Timing Solenoid Malfunction/ 3-2 Shift Solenoid Circuit Electrical

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.

P2138 OBD-II Diagnostic Powertrain (P) Trouble Code Description

P2138 OBD-II Trouble Code The Accelerator Pedal Position (APP) sensor is installed on the upper end of the accelerator pedal assembly. The sensor detects the accelerator position and sends a signal to the Engine Control Module P2138 code.

Main reason For P2138 Code

The reason of P2138 OBD-II Engine Trouble Code is Ambient Air Temperature Sensor Circuit Low.

Parts or components should not be replaced with reference to only a P2138 DTC. The vehicle service manual should be consulted for more information on possible causes of the fault, along with required testing.