OBD-II code · Powertrain (generic)
P04E6 EGR Temperature Sensor D Circuit Range or Performance
Same as P04CF on EGR temperature sensor D. EGR mixes inert exhaust into intake to lower combustion peak temperature — too little raises NOx, too much causes misfires and rough running.
Is it safe to drive with P04E6?
Usually safe to drive in the short term. Get it diagnosed when convenient, sooner if the car drives differently.
Common causes
- Most likelySensor element drifted
Symptoms
- Check engine light on
- Pinging or knocking under load
- Power loss and hesitation
- Possible rough idle
- Failed emissions inspection (NOx)
Repair at a glance
- Difficulty
- Medium
- DIY friendly
- Often, with basic tools
- Typical labour
- 0.6–1.6 h
- Emissions test
- Likely to fail
- Parts involved
- Egr Temperature Sensor D
Related codes
- P04CFEGR Temperature Sensor C Circuit Range or Performance
- P04E3Crankcase Ventilation Hose Connection Sensor Circuit High
- P04E4Crankcase Ventilation Hose Connection Sensor Circuit Intermittent or Erratic
- P04E5EGR Temperature Sensor D Circuit
- P04E7EGR Temperature Sensor D Circuit Low
- P04E8EGR Temperature Sensor D Circuit High
- P04E9EGR Temperature Sensor D Circuit Intermittent or Erratic
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.