P247C
Exhaust Gas Temperature Out of Range Bank 2 Sensor 1
Exhaust gas temperature (diesel emissions)
Generic OBD-II
Medium
What it means
P247C means the bank 2, sensor 1 exhaust-gas-temperature (EGT) reading is outside the range the computer expects when compared with engine conditions and the other exhaust sensors. It usually points to a drifting sensor, a wiring fault, or an exhaust leak near the probe — not an internal engine problem. The computer uses these temperatures to protect the catalyst and particulate filter.
Medium
Can I keep driving? Usually driveable short-term, but get it checked — an implausible exhaust-temperature reading can disrupt regeneration or trigger reduced power to protect the exhaust.
Common symptoms
What you'll notice
- Check-engine light on
- Possible reduced power or limp mode
- DPF regeneration may not run correctly
- Often no obvious driving symptom
Common causes
Most likely first
- Bank 2, sensor 1 EGT sensor drifted or reading an implausible temperatureLikely
- Wiring or connector fault skewing the signalCommon
- Wrong or mismatched sensor fitted in that positionCommon
- Exhaust leak near the sensor pulling the reading out of rangeLess often
- Less commonly, a failing ECM/PCMLess often
How to diagnose & fix
Work through it in order
- Read freeze-frame data and compare all EGT sensor readings at a similar exhaust temperature to spot the outlier.
- Inspect the sensor's wiring and connector for damage or corrosion.
- Check for an exhaust leak close to the sensor.
- Confirm the correct sensor part is fitted in that position.
- Replace the out-of-range sensor, then clear and retest.
FAQ
Quick answers
Is it safe to drive with P247C?+
Short trips are usually fine, but the ECM depends on accurate exhaust temperatures to protect the DPF and turbo. Fix it before extended driving to avoid derate or filter damage.
Can I just clear P247C?+
It returns if the sensor keeps reading out of range. Diagnose which sensor is wrong and repair it first.
Related codes
Often seen with P247C
Read & clear P247C 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