OBD-II code · Powertrain (generic, extended)
P2389 EGR Sensor E Circuit Intermittent
Same as P2384 on EGR sensor E. 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 P2389?
Usually safe to drive in the short term. Get it diagnosed when convenient, sooner if the car drives differently.
Common causes
- Most likelyIntermittent contact at connector
- Less likelyConnector with intermittent contact under vibration
- Less likelyHarness routed against vibrating component
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
- 0.6–1.8 h
- Emissions test
- Likely to fail
- Parts involved
- Egr Sensor E, Egr Sensor Wiring E
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.