LEMON Manuals: Even more car manuals for everyone
Home >> Subaru >> 2016 >> WRX Premium, Automatic CVT Trans >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 15 (Diagnostic Trouble Code (DTC) Detecting Criteria) >> Diagnostic Trouble Code (DTC) Detecting Criteria >> DTC P014C A/F/O2 Sensor Slow Response - Rich To Lean Bank 1 Sensor 1 >> Diagnostic Method 2

Diagnostic Method 2

WARNING: This page is about a different variant/trim than selected.

Detect the malfunction by the cumulative value obtained from the amount of variation in λ change.

Fig 1: Front Oxygen (A/F) Sensor Output (Diagnostic Method 2)
G10290999Courtesy of SUBARU OF AMERICA, INC.

Judge as NG when the following conditions are established.

JUDGMENT VALUE SPECIFICATION

Malfunction Criteria Threshold Value DTC
Cumulative value obtained from the amount of variation in λ change Σ |(lambda(n) - lambda(n-1)) - (lambda(n-1) - lambda(n-2))| < Value from Map P014C and P014D
CUMULATIVE VALUE SPECIFICATION - MAP

Cumulative value obtained from the amount of variation in λ Σ |lambda(n) - lambda(n-1)| 0.00 6.00
Cumulative value obtained from the amount of variation in λ change 0.00 6.50

Time Needed for Diagnosis:  90000 ms

Malfunction Indicator Light Illumination:  Illuminates when malfunction occurs in 2 continuous driving cycles.