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P304E Engine Trouble Code

Meaning of P304E engine trouble code is a kind of powertrain trouble code and P304E 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.

P304E 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 P304E code is occuring now you should check P304E repair processes.
Now don't ask yourself; What should you do with P304E code ?
The solution is here :

P304E Possible Solution:

P304E Engine

Power Steering Pressure (PSP) Switch Malfunction In Key On, Engine Off Self-Test, this DTC indicates the PSP input to the PCM is high. In Key On, Engine Running Self-Test, this DTC indicates that the PSP input did not change state. Steering wheel must be turned during Key On, Engine Running Self-Test PSP switch/shorting bar damaged SIG RTN circuit open PSP circuit open or shorted to SIGRTN PCM damaged.

P304E Code Meaning :

P 3 0 4 e
OBD-II Diagnostic Powertrain (P) Trouble Code For Engine Ignition System Or Misfire Ambient Air Temperature Sensor Circuit Low Injection lump Fuel Metering Control 'B' High (Cam/Rotor/Injector)

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.

P304E OBD-II Diagnostic Powertrain (P) Trouble Code Description

P304E engine trouble code is about .

Main reason For P304E Code

The reason of P304E OBD-II Engine Trouble Code is Ambient Air Temperature Sensor Circuit Low.

P304E 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.