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Home >> Chrysler >> 2004 >> Sebring Limited, 2D Convertible >> Repair and Diagnosis >> Accessories & Equipment >> Anti-Theft Systems >> Powertrain Diagnostic Procedures - NGC DRIVEABILITY Symptoms, NGC DRIVEABILITY Diagnostic Tests DTCS P0016 To P0461 - Except Coupe >> DRIVEABILITY - NGC - Diagnostic Tests >> DTC P0405: EGR Position Sensor Low >> Possible Causes

Possible Causes

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

DIAGNOSTIC PROCEDURE - P0405 - EGR POSITION SENSOR LOW

TEST ACTION
1 When monitoring EGR valve position on the DRBIII® during actuation, 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?
  1. Yes --> Go To 2
  2. No --> Go To 10
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?
  1. Yes --> Go To 3
  2. No --> Go To 7
3 Turn the ignition off.
Disconnect the EGR Solenoid harness connector.
With the DRBIII®, monitor the EGR Position Sensor voltage.
Turn the ignition on.
Is the voltage above 4.5 volts?
  1. Yes --> Replace the EGR Solenoid Assembly.

    Perform POWERTRAIN VERIFICATION TEST VER - 5 - NGC .

  2. No --> Go To 4
4 Turn the ignition off.
Disconnect the EGR Position harness connector.
Disconnect the PCM harness connector.
Measure the resistance between ground and the EGR Position Sensor Signal circuit at the EGR Position harness connector.
Is the resistance below 100 ohms?
  1. Yes --> Repair the short to ground circuit in the EGR Position Sensor Signal circuit.

    Perform POWERTRAIN VERIFICATION TEST VER - 5 - NGC .

  2. No --> Go To 5
5 Turn the ignition off.
Disconnect the EGR Position harness connector.
Disconnect the PCM harness connector.
Measure the resistance between the EGR Position Sensor Signal circuit and the Sensor ground circuit in the EGR Position harness connector.
Is the resistance below 100 ohms?
  1. Yes --> Repair the short to Sensor ground in the EGR Position Sensor Signal circuit.

    Perform POWERTRAIN VERIFICATION TEST VER - 5 - NGC .

  2. No --> Go To 6
6
NOTE: Before continuing, check the PCM harness connector terminals for corrosion, damage, or terminal push out. Repair as necessary.
If there are no possible causes remaining, view repair.Repair:Replace and program the Powertrain Control Module in accordance with the Service Information.Perform POWERTRAIN VERIFICATION TEST VER - 5 - NGC .
7 Turn the ignition off.
Disconnect the EGR Solenoid harness connector.
Disconnect the PCM harness connector.
Measure the resistance between ground and the 5 Volt Supply circuit at the EGR Solenoid harness connector.
Is the resistance below 100 ohms?
  1. Yes --> Repair the short to ground in the 5 Volt Supply circuit.

    Perform POWERTRAIN VERIFICATION TEST VER - 5 - NGC .

  2. No --> Go To 8
8 Turn the ignition off.
Disconnect the EGR Solenoid harness connector.
Disconnect the PCM harness connector.
CAUTION: DO NOT PROBE THE PCM HARNESS CONNECTORS. PROBING THE PCM HARNESS CONNECTORS WILL DAMAGE THE PCM TERMINALS RESULTING IN POOR TERMINAL TO PIN CONNECTION. INSTALL MILLER SPECIAL TOOL #8815 TO PERFORM DIAGNOSIS.

Measure the resistance of the 5 Volt Supply circuit from the EGR Solenoid harness connector to the appropriate terminal of special tool #8815.
Is the resistance below 5.0 ohms?
  1. Yes --> Go To 9
  2. No --> Repair the open in the 5 Volt Supply circuit.

    Perform POWERTRAIN VERIFICATION TEST VER - 5 - NGC .
9
NOTE: Before continuing, check the PCM harness connector terminals for corrosion, damage, or terminal push out. Repair as necessary.
If there are no possible causes remaining, view repair.Repair:Replace and program the Powertrain Control Module in accordance with the Service Information.Perform POWERTRAIN VERIFICATION TEST VER - 5 - NGC .
10
NOTE: The engine will run rough and possibly stall in the following test. Feather the accelerator pedal to keep the engine from stalling.
Start the engine.With the DRBIII®, enter Engine System Test and then EGR System Test. Push the 4=VARIABLE function.Monitor the EGR voltage while slowly pushing the up arrow.Is the voltage change smooth?
  1. Yes --> Test Complete.
  2. No --> Replace the EGR Solenoid Assembly.

    Perform POWERTRAIN VERIFICATION TEST VER - 5 - NGC .
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