P04E9
EGR Temperature Sensor D Circuit Intermittent/Erratic
P04E9 is an OBD-II diagnostic trouble code meaning: EGR Temperature Sensor D Circuit Intermittent/Erratic. Common causes: open or short circuit in the sensor wiring harness, oxidation of sensor connector contacts. Estimated repair cost: $33–89.
Symptoms
- Unstable engine operation at idle
- Increased fuel consumption
- Reduced engine power
- Check Engine light comes on
Causes
- Open or short circuit in the sensor wiring harness
- Oxidation of sensor connector contacts
- EGR temperature sensor malfunction
- Problems with the ECU
How to Fix
- Check the integrity of the sensor wiring harness
- Clean sensor connector contacts
- Check the resistance of the EGR temperature sensor
- Replace sensor if necessary
- Reset the error and check the system operation
Related codes
Error P04E9 by Vehicle Brand
FAQ
What does the P04E9 code mean?
P04E9 is an OBD-II diagnostic trouble code that indicates: EGR Temperature Sensor D Circuit Intermittent/Erratic
What causes a P04E9 error code?
The most common causes of P04E9 include: Open or short circuit in the sensor wiring harness; Oxidation of sensor connector contacts; EGR temperature sensor malfunction; Problems with the ECU.
How do I fix a P04E9 diagnostic trouble code?
To fix P04E9: Check the integrity of the sensor wiring harness. Clean sensor connector contacts. Check the resistance of the EGR temperature sensor. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P04E9?
Limited driving only, diagnose soon
How much does it cost to fix P04E9?
The estimated repair cost for P04E9 is $33–89. Actual cost depends on your vehicle, location, and labor rates.
See also: Russian version · NationStat