P2480
Exhaust Gas Temperature Sensor Circuit/Open Bank 1 Sensor 5
Exhaust / emissions
Generic OBD-II
Medium
What it means
P2480 means the ECU sees an open (or invalid) circuit at the exhaust-gas-temperature sensor on bank 1, sensor 5. This sensor helps protect the catalyst and control particulate-filter regeneration, so the fault is electrical — a broken wire, bad connector, or failed sensor — and does not prevent the engine from running.
Medium
Can I keep driving? Usually still drivable, but an open exhaust-temperature signal can disable filter regeneration or force limp mode on some diesels — fix it before soot accumulates.
Common symptoms
What you'll notice
- Check-engine light on
- Diesel particulate filter regeneration disabled on some vehicles
- Possible reduced power or limp mode
- Often no obvious change in how the vehicle drives
Common causes
Most likely first
- Open circuit in the exhaust-gas-temperature (EGT) sensor for bank 1, sensor 5Likely
- Broken or chafed wiring in the sensor harnessCommon
- Corroded, loose, or disconnected sensor connectorCommon
- Faulty EGT sensorLess often
How to diagnose & fix
Work through it in order
- Read freeze-frame and check the live EGT value; an open circuit typically reads a fixed extreme value.
- Inspect the connector and harness near the exhaust for breaks, heat damage, or corrosion.
- Check the signal and ground wiring for continuity to find the open.
- Measure the sensor resistance against spec and replace it if open or out of range.
- Clear the code and verify a normal reading after a drive cycle.
FAQ
Quick answers
Is it safe to drive with P2480?+
Usually yes short term, but an open EGT signal often disables DPF regeneration on diesels, so the filter gradually clogs. Repair it promptly.
Can I just clear P2480?+
It returns as soon as the ECU sees the open circuit again. The wiring or sensor must be repaired first.
Related codes
Often seen with P2480
Read & clear P2480 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