Anyone happens to encounter iOBDCodes (p0170)

[Keithhiap]

My car is encountering this issue after changing exhaust pipe, just the muffler.

 

First owner mods his car if i am not wrong.

 

With this code, i googled and it was O2 sensor related.

 

My friend use the iOBD scanner and resetted the code for me, but still no use.

 

Anyone got other suggestion.

 

He told me can reset the ECU too but i havent try that yet.

[SaNibOy]

Yup, reset it but the Engine Check Light but after a while it wil light up again. But normally ppl decat or change extractor got prob with the O2 sensor. Unless urs special reason la.

[Plim72]

My car is encountering this issue after changing exhaust pipe, just the muffler.

 

First owner mods his car if i am not wrong.

 

With this code, i googled and it was O2 sensor related.

 

My friend use the iOBD scanner and resetted the code for me, but still no use.

 

Anyone got other suggestion.

 

He told me can reset the ECU too but i havent try that yet.

 

Your FC very bad right? i can only speculate that your long term fuel trim is off. This mean your car is running too lean or too rich in closed loop mode. This got nothing to do with the second O2 sensor in which some of you guys do encounter after decatting.. By reset your ecu, you are basically just clearing off the fuel trims data. problem would reappear few days later depending on usage as the trim values get updated by the ecu. Once it hit -/+15%, CEL happens. Again speculating, i bet either your primary 02 sensor failing or exo is leaking. add 1 more. could be MAF/MAP too. These are the obvious. For the not obvious, the list is quite long....good luck

Edited May 9, 2010 by Plim72