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P1542 Engine Code Repair

Meaning of P1542 engine trouble code is a kind of powertrain trouble code and P1542 if your catalytic convertor fails completely, you eventually won't be able to keep the car running. Your gas mileage will also be terrible, so you should try and fix it as soon as you can. Unfortunately, the average replacement cost is around $2,140 and you can't do it yourself unless you're an experienced mechanic.

P1542 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 P1542 code is occuring now you should check P1542 repair processes.
Now don't ask yourself; What should you do with P1542 code ?
The solution is here :

P1542 Possible Solution:

P1542 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.

P1542 Code Meaning :

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

1
Fuel And Air Metering

5
O2 Sensor Heater Circuit Malfunction

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

2
Crankshaft Position Sensor A Circuit Low Input

Is the fuel pump sometimes not priming when you turn the key to ON(II)? Start by measuring the fuel pressure and checking whether you have bright white-bluish spark at all four plugs. The mechanical timing is also something that you should check, as we mentioned above.

P1542 OBD-II Diagnostic Powertrain (P) Trouble Code Description

P1542 OBD-II Trouble Code A/C System High Pressure High Temperature is one of the definitions for the P1542; however your vehicles manufacturer may have a different definition for the P1542 code. Please check below for your sp P1542 code.

Main reason For P1542 Code

The reason of P1542 OBD-II Engine Trouble Code is O2 Sensor Heater Circuit Malfunction.

P1542 code on vehicles with electronically controlled automatic transmissions, the 3-4 shift solenoid is responsible for actuating the hydraulic circuits to activate clutches or bands that change gears inside the automatic transmission.