Logo

P3400 Engine Trouble Code

Meaning of P3400 engine trouble code is : P3400 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 $2,000 and you can't do it yourself unless you're an experienced mechanic.

P3400 Possible Solution:

P3400 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.

P3400 Code Meaning :

P 3 4 0 0
OBD-II Diagnostic Powertrain (P) Trouble Code For Engine Ignition System Or Misfire O2 Sensor Heater Circuit Malfunction Cold Start Injector 1 Malfunction Shift Solenoid E Performance or Stuck Off

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.

P3400 OBD-II Diagnostic Powertrain (P) Trouble Code Description

P3400 OBD-II Trouble Code To provide maximum fuel economy under light load driving conditions, the Engine Control Module ( P3400 code.

Reason For P3400 Code

The reason of P3400 OBD-II Engine Trouble Code is O2 Sensor Heater Circuit Malfunction.

P3400 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.