P041D
EGR Temperature Sensor B Circuit High
EGR (emissions)
Generic OBD-II
Medium
What it means
P041D means the "B" EGR (exhaust gas recirculation) temperature sensor circuit is reading high — typically an open or a short to voltage. This sensor tracks recirculated-exhaust temperature for emissions control, so the fault mainly turns on the light and can cause an emissions-test failure, usually from wiring or the sensor rather than an engine problem.
Medium
Can I keep driving? Drivable — this is an emissions sensor, so the engine runs, but you may fail an emissions test and see occasional pinging under load.
Common symptoms
What you'll notice
- Check-engine light on
- Often no obvious drivability change
- May fail an emissions/readiness test
- Occasional pinging under load if EGR operation is affected
Common causes
Most likely first
- Open circuit or short-to-voltage (high) in the EGR temperature sensor B wiringLikely
- Corroded or disconnected connector at the sensorCommon
- Faulty EGR temperature sensor BCommon
- Poor sensor groundLess often
- ECM fault (rare)Less often
How to diagnose & fix
Work through it in order
- Inspect the EGR temp sensor B connector and wiring for an open or a short to voltage.
- Check the sensor ground and supply.
- Compare the sensor's resistance/reading to spec at known temperatures.
- Replace the EGR temperature sensor if it reads out of range, then clear and re-test.
FAQ
Quick answers
Is it safe to drive with P041D?+
Yes — it's an emissions monitoring sensor. The main risk is failing an emissions test, so repair it before testing.
Can I just clear P041D?+
It returns while the wiring or sensor fault remains. Fix the circuit first.
Related codes
Often seen with P041D
Read & clear P041D yourself
Scan your car, confirm the code, and clear it once it's fixed — with OBD DashX on your phone.
✓ Verified name — SAE J2012 / ISO 15031-6Guidance reviewed by OBD DashX