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Home >> Subaru >> 2015 >> BRZ Series.Blue, Standard Trans >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System Diagnostics (2 Of 3) >> DTC P0171 System too Lean (Bank 1); DTC P0172 System too Rich (Bank 1); DTC P1170 Fuel System Abnormal (Port); DTC P117B Fuel System Abnormal (Di) >> Description of functions >> Notes

Description of functions: Notes

NOTE:
  • When DTC P0171 is recorded, the actual air/fuel ratio is on the leaner side.
  • When DTC P0172 is recorded, the actual air/fuel ratio is on the richer side.
  • If the vehicle runs out of gas, the fuel correction amount is corrected to the increase side, and P0171 (lean malfunction) may be output.
  • When DTC P1170 or P117B is output, in some cases it is not possible to accurately determine if the port injection side or the cylinder injection side is faulty. In this case, perform the [System Operation Check Mode] to determine if the injection system is faulty.
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