fapers

Hi,

Few days ago CEL on my 2008 lancer GTS (FED) lighted up. The error codes are P0107 (bank 1) and P0171.

About 10 days before that I removed K&N Typhoon SRI and installed back the original intake (only with K&N drop in folter inside). At the same time I uploded default RRM Piggyback fuel MAP for my car. Everything was fine for these 10 days and than during fast accelerating CEL showed up.

Does anyone has any ideas what could it be? Is it MAF, MAP or O2 sensor?

Thanks.

CamShaft

DTC P0107: Manifold Absolute Pressure Circuit Low Input

TROUBLESHOOTING HINTS (The most likely causes for this code to be set are:
•Manifold absolute pressure sensor failed.
•Open or shorted manifold absolute pressure sensor circuit, harness damage or connector damage.
•ECM failed.

DTC P0171: System too Lean

TROUBLESHOOTING HINTS (The most likely causes for this code to be set are:
•Mass airflow sensor failed.
•Injector failed.
•Incorrect fuel pressure.
•Air drawn in from gaps in gasket, seals, etc.
•Engine coolant temperature sensor failed.
•Intake air temperature sensor failed.
•Barometric pressure sensor failed.
•Manifold absolute pressure sensor failed.
•Exhaust leak.
•Use of incorrect or contaminated fuel.
•Harness damage in injector circuit or connector damage.
•ECM failed.

Sounds like a failed MAP sensor. Best to be sure before replacing it. You will need proper knowledge how to diagnose, or take it to a tech.

Good luck