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P1240 Engine Code Repair

Meaning of P1240 engine trouble code is a kind of powertrain trouble code and P1240 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.

P1240 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 P1240 code is occuring now you should check P1240 repair processes.
Now don't ask yourself; What should you do with P1240 code ?
The solution is here :

P1240 Possible Solution:

P1240 Engine

Power Steering Pressure (PSP) Switch Signal Malfunction The PCM counts the number of times vehicle speed transitions from 0 to a calibratable speed. After a calibratable number of speed transitions the PCM expects that the PSP input should have changed. This DTC is set if the transition is not detected. Vehicle towed with engine running Power steering hydraulic concern was repaired but DTC was not erased PSP switch/shorting bar damaged SIG RTN circuit open PSP circuit open or shorted to SIGRTN PCM damaged Check, if possible, if vehicle was towed or power steering service was performed. Observe PSP V PID while checking wires for intermittents.

P1240 Code Meaning :

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

1
Fuel And Air Metering

2
Fuel Rail/System Pressure - Too High

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

0
Reverse Input Circuit

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.

P1240 OBD-II Diagnostic Powertrain (P) Trouble Code Description

P1240 OBD-II Trouble Code Sensor Power Supply Malfunction is one of the definitions for the P1240; however your vehicles manufacturer may have a different definition for the P1240 code. Please check below for your specific mak P1240 code.

Main reason For P1240 Code

The reason of P1240 OBD-II Engine Trouble Code is Fuel Rail/System Pressure - Too High.

P1240 the main thing to check is to verify the operation of the VCT solenoid. You're looking for a sticking or stuck VCt solenoid valve caused by contamination. Refer to vehicle specific repair manual to perform component tests for the VCT unit.