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DRIVEABILITY - DIESEL
Symptom:
P0651-SENSOR REFERENCE VOLTAGE B CKT VOLTAGE TOO LOW
When Monitored and Set Condition:
P0651-SENSOR REFERENCE VOLTAGE B CKT VOLTAGE TOO LOW
When Monitored: With the ignition on.
Set Condition: The ECM detects a short to ground on the Sensor Reference Voltage B
circuit, or a short to ground on the Accelerator Pedal Position Sensor 5-Volt Supply circuit.
INTERMITTENT CONDITION
A/C PRESS, OIL PRESS, BOOST PRESS, OR APP SENSOR SHORTED TO GROUND
SENSOR REFERENCE VOLTAGE B CIRCUIT SHORTED TO GROUND
SENSOR REFERENCE VOLTAGE B CIRCUIT SHORTED TO SENSOR GROUND
ACCELERATOR PEDAL POSITION SENSOR 5-VOLT SUPPLY CIRCUIT SHORTED TO GROUND
ACCELERATOR PEDAL POSITION SENSOR 5-VOLT SUPPLY CIRCUIT SHORTED TO SENSOR
GROUND
ENGINE CONTROL MODULE
TEST
1
Turn the ignition on.
With the DRB, erase ECM DTCs.
Monitor the DRB for ECM DTCs.
Did this DTC set again?
Yes → Go To 2
→ Go To 8
No
POSSIBLE CAUSES
ACTION
146
APPLICABILITY
All
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