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Symptom:
P0405 - EGR POSITION SENSOR LOW
When Monitored and Set Condition:
P0405 - EGR POSITION SENSOR LOW
When Monitored: With the ignition on. Battery voltage above 10.0 volts.
Set Condition: EGR Position Sensor Signal is less than 0.1026 of a volt. One trip Fault.
EGR POSITION SENSOR SWEEP
INTERMITTENT CONDITION
5 VOLT SUPPLY CIRCUIT SHORTED TO GROUND
5 VOLT SUPPLY CIRCUIT OPEN
EGR POSITION INTERNAL FAILURE
EGR POSITION SENSOR SIGNAL CIRCUIT SHORTED TO GROUND
EGR POSITION SENSOR SIGNAL CIRCUIT SHORTED TO SENSOR GROUND CIRCUIT
PCM 5 VOLT SUPPLY CIRCUIT
PCM EGR POSITION SENSOR SIGNAL
TEST
1
NOTE: When monitoring EGR valve position on the DRBIII during actua-
tion, a delay in valve movement will occur until enough duty cycle is
applied to overcome the spring force in the EGR valve, this is to be
considered normal operation.
Turn the ignition on.
With the DRBIII , read the EGR Position Sensor voltage.
Is the voltage below 0.2 of a volt?
Yes → Go To 2
→ Go To 10
No
2
Turn the ignition off.
Disconnect the EGR Solenoid harness connector.
Turn the ignition on.
Measure the voltage of the 5 Volt Supply circuit in the EGR Solenoid harness
connector.
Is the voltage between 4.5 to 5.2 volts?
Yes → Go To 3
→ Go To 7
No
POSSIBLE CAUSES
ACTION
153
DRIVEABILITY - NGC
APPLICABILITY
All
All
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