P1477 Engine Trouble Code

Meaning of P1477 engine trouble code is a kind of powertrain trouble code and P1477 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.

P1477 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 P1477 code is occuring now you should check P1477 repair processes.
Now don't ask yourself; What should you do with P1477 code ?
The solution is here :

P1477 Possible Solution:

P1477 Engine

The crankshaft sensor signals the fuel injection computer or the ignition control when the cylinders are firing. This causes the ignition coil to provide a spark and the injector to inject fuel into each cylinder at the right time.If either sensor isn't working correctly, the car will run rough and the engine will be less efficient. In later car models, the car's computer can usually keep the vehicle running, but the engine warning light on the dashboard goes on to warn the driver.

P1477 Code Meaning :

P 1 4 7 7
OBD-II Diagnostic Powertrain (P) Trouble Code For Engine Fuel And Air Metering O2 Sensor Heater Circuit Malfunction Cylinder 10 Contribution/balance Fault Shift/Timing Solenoid Malfunction/ 3-2 Shift Solenoid Circuit Electrical

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.

P1477 OBD-II Diagnostic Powertrain (P) Trouble Code Description

P1477 OBD-II Trouble Code Additional Fan Relay Circuit Malfunction is one of the definitions for the P1477; however your vehicles manufacturer may have a different definition for the P1477 code. Please check below for your spe P1477 code.

Main reason For P1477 Code

The reason of P1477 OBD-II Engine Trouble Code is O2 Sensor Heater Circuit Malfunction.

P1477 DTCs may also be triggered by faults earlier down the line. For example, a dirty MAF sensor might be causing the car to overcompensate in its fuel-trim adjustments. As a result, oxygen sensors are likely to report fuel mixture problems.