LEMON Manuals: Even more car manuals for everyone
Home >> Subaru >> 2017 >> WRX STI >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Engine Control System (Diagnostics) (P000A To P015B) (2.5L) >> Diagnostic Procedure with Diagnostic Trouble Code (DTC) >> DTC P014C A/F/O2 Sensor Slow Response - Rich To Lean Bank 1 Sensor 1 >> Notes

DTC P014C A/F/O2 Sensor Slow Response - Rich To Lean Bank 1 Sensor 1: Notes

DTC DETECTING CONDITION: 

Detected when two consecutive driving cycles with fault occur.

CAUTION: After servicing or replacing faulty parts, perform Clear Memory Mode <Ref. to OPERATION , Clear Memory Mode.>, and Inspection Mode <Ref. to PROCEDURE , Inspection Mode.>.
Step Check Yes No
1 CHECK EXHAUST SYSTEM. 
NOTE: Check the following items.
  • Loose installation of front portion of exhaust pipe onto cylinder heads
  • Loose connection between front exhaust pipe and front catalytic converter
  • Damage of exhaust pipe resulting in a hole
Is there any fault in exhaust system? Repair the exhaust system. Replace the front oxygen (A/F) sensor. <Ref. to Front Oxygen (A/F) Sensor .>