OBD-II code · Powertrain (generic, extended)
P246A Exhaust Gas Temperature Sensor Circuit Intermittent or Erratic Bank 2 Sensor 3
Same as P242E on bank 2 sensor 3. Wiring faults of this kind typically come from chafing, water ingress at connector seals, or pin push-back — a wiggle test on the harness while the code is active often confirms the location.
Is it safe to drive with P246A?
Usually safe to drive in the short term. Get it diagnosed when convenient, sooner if the car drives differently.
Common causes
- Most likelyIntermittent contact at connector
- Less likelyConnector with intermittent contact under vibration
- Less likelyHarness routed against vibrating component
Repair at a glance
- Difficulty
- Medium
- DIY friendly
- Often, with basic tools
- Typical labour
- 0.6–1.8 h
- Emissions test
- Likely to fail
- Parts involved
- Egt Sensor B2s3
Related codes
- P242EExhaust Gas Temperature Sensor Circuit Intermittent or Erratic Bank 1 Sensor 3
- P2477Exhaust Gas Temperature Sensor Circuit Intermittent or Erratic Bank 2 Sensor 4
- P2484Exhaust Gas Temperature Sensor Circuit Intermittent or Erratic Bank 1 Sensor 5
- P2489Exhaust Gas Temperature Sensor Circuit Intermittent or Erratic Bank 2 Sensor 5
- P2467Exhaust Gas Temperature Sensor Circuit Range or Performance Bank 2 Sensor 3
- P2468Exhaust Gas Temperature Sensor Circuit Low Bank 2 Sensor 3
- P2469Exhaust Gas Temperature Sensor Circuit High Bank 2 Sensor 3
- P246BVehicle Conditions Incorrect for Particulate Filter Regeneration
- P246CParticulate Filter Restriction Forced Limited Power Bank 1
- P246DParticulate Filter Pressure Sensor A and B Correlation
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.