OBD-II code · Powertrain (generic, extended)
P2031 Exhaust Gas Temperature Sensor Circuit (Bank 1 Sensor 2)
The exhaust gas temperature (EGT) sensor at position 2 on bank 1 — typically downstream of the catalyst or before the DPF — reports an implausible signal. EGT sensors protect the turbocharger and DPF from over-temperature and time the regeneration cycle.
Is it safe to drive with P2031?
Usually safe to drive in the short term. Get it diagnosed when convenient, sooner if the car drives differently.
Common causes
- Most likelyEGT sensor failed
- PossibleWiring damaged by heat
Repair at a glance
- Difficulty
- Medium
- DIY friendly
- Often, with basic tools
- Typical labour
- 0.5–2 h
- Emissions test
- Likely to fail
- After the fix
- A drive cycle is needed before the light stays off
- Parts involved
- Egt Sensor, Egt Wiring
Related codes
- P2034Exhaust Gas Temperature Sensor Circuit (Bank 2 Sensor 2)
- P202EReductant Injection Valve Circuit Range/Performance (Bank 1 Unit 1)
- P202FReductant/Regeneration Supply Control Circuit Range/Performance
- P2030Fuel Fired Heater Performance
- P2032Exhaust Gas Temperature Sensor Circuit Low (Bank 1 Sensor 2)
- P2033Exhaust Gas Temperature Sensor Circuit High (Bank 1 Sensor 2)
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.