DF502 Engine Trouble Code
Meaning of DF502 engine trouble code is : DF502 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.
DF502 Possible Solution:
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.
DF502 Code Meaning :
|For Engine||Fuel Composition Sensor Circuit Malfunction||Cold Start Injector 1 Malfunction||Glow Plug/Heater Circuit 'A' Malfunction|
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.
DF502 DescriptionDF502 engine trouble code is about Glow Plug/Heater Circuit 'A' Malfunction.
Reason For DF502 CodeThe reason of DF502 OBD-II Engine Trouble Code is Fuel Composition Sensor Circuit Malfunction.
DF502 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.