DTC Description

When ECM/PCM detects short to ground in FPR control circuit, ECM/PCM sets DTC P0091.

DTC Detecting Condition

Item

Detecting Condition

Possible Cause

DTC Strategy

•

Electrical check

1.

Poor connection

2.

Short to ground in control circuit

3.

FPR

Enable Conditions

•

10V < Battery Voltage < 16V

Threshold Value

•

Short circuit to ground

Diagnosis Time

•

-

Mil On Condition

•

2 trips

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