Isuzu 4HE1 (1999-04) P21 Rack Sensor Circuit Low

Isuzu 4HE1 P21

Error Classified:
Rack Sensor - Harness Open GND short

Diagnostic Condition:
Rack Voltage 0.3V or lower, Engine speed 600-900rpm, and water Temp. 0°C or higher are detected for 3 sec running.

Return Condition:
When forward normal

Back Up:
EVRV: EGR
VSV: EGR Quick Cut
VSV: VSS The above outputs stop
R/L: QWS Non-continuity idle position output stop.
The above outputs stop.
Rack learning valve: 0

Judging Time:
3.52 sec

Isuzu 4HE1 (1999-04) Fault Code P22

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