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P0143 Engine Code Repair

Meaning of P0143 engine trouble code is a kind of powertrain trouble code and 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 $240-$400 depending on the car, but that's usually the cost of parts because the labor is relatively simple.

P0143 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 P0143 code is occuring now you should check P0143 repair processes.
Now don't ask yourself; What should you do with P0143 code ?
The solution is here :

P0143 Possible Solution:

P0143 Engine

Air Conditioning Pressure Sensor (ACP) Insufficient Pressure Change Each time the A/C clutch engages, the PCM is looking for a pressure change in the refrigerant. If the change in pressure is outside of the calibration the DTC will set. A/C system mechanical failure Open ACP or VREF circuit A/C sensor damaged A/C system electrical failure A/C clutch always engaged Verify A/C system function, including refrigerant charge.

P0143 Code Meaning :

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

0
Intake Valve Control Solenoid Circuit Low

1
Ambient Air Temperature Sensor Circuit Low

4
Injection Pump Fuel Metering Control 'A' High (Cam/Rotor/Injector)

3
Glow Plug/Heater Circuit 'A' Malfunction

Regarding the P0143 code, it would probably be worthwhile to carefully inspect the wire harness near the intake manifold bracket. This is done most easily from below the car in the area near the oil filter.

P0143 OBD-II Diagnostic Powertrain (P) Trouble Code Description

P0143 OBD-II Trouble Code The rear heated oxygen sensor (or sensor 3 for some vehicles), after three way catalyst (manifold), monitors the oxygen level in the exhaust gas on each bank. Even if switching characteristics of the P0143 code.

Main reason For P0143 Code

The reason of P0143 OBD-II Engine Trouble Code is Ambient Air Temperature Sensor Circuit Low.

P0143 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.