P2484
Exhaust Gas Temperature Sensor Circuit Intermittent/Erratic Bank 1 Sensor 5
Exhaust temperature / emissions
Generic OBD-II
Medium
What it means
P2484 means the exhaust gas temperature (EGT) sensor circuit for bank 1, sensor 5 is giving an intermittent or erratic signal — the reading jumps or cuts out instead of tracking smoothly. EGT sensors protect the turbo, catalyst, and diesel particulate filter, so an unstable signal can trigger warnings and interrupt regeneration while the engine keeps running.
Medium
Can I keep driving? Usually drivable, but an unstable reading can trigger warnings and interrupt diesel-filter regeneration — have it checked soon.
Common symptoms
What you'll notice
- Check-engine light on, sometimes intermittently
- Reduced power or limp mode that comes and goes
- On diesels, interrupted particulate-filter (DPF) regeneration
- Emissions-related warnings
Common causes
Most likely first
- Loose or corroded connector at the EGT sensorLikely
- Chafed or heat-damaged wiring making intermittent contactCommon
- Failing exhaust gas temperature (EGT) sensorCommon
- Poor ground for the sensor circuitLess often
- Rarely, an ECM faultLess often
How to diagnose & fix
Work through it in order
- Scan for codes and record freeze-frame data.
- Wiggle-test the sensor connector and harness while watching live data for dropouts.
- Inspect the wiring for heat or chafe damage near the exhaust.
- Measure the sensor while flexing the harness to catch the intermittent.
- Secure or repair the wiring, replace the sensor if erratic, then clear and re-test.
FAQ
Quick answers
Is it safe to drive with P2484?+
Usually yes short-term, but the erratic signal can interrupt diesel-filter regeneration, so repair it before soot builds up.
Can I just clear P2484?+
Intermittent faults clear easily but return until the loose wiring, connector, or sensor is fixed.
Related codes
Often seen with P2484
Read & clear P2484 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