OBD-II code · Powertrain (generic, extended)
P242A Exhaust Gas Temperature Sensor Circuit Bank 1 Sensor 3
A general circuit fault is detected on the EGT sensor at bank 1 sensor 3 (typically just downstream of the turbo or before the catalyst). The ECU loses thermal protection feedback for the catalyst and DPF.
Is it safe to drive with P242A?
Usually safe to drive in the short term. Get it diagnosed when convenient, sooner if the car drives differently.
Common causes
- Most likelyOpen in sensor or wiring
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 B1s3
Related codes
- P0544Exhaust Gas Temperature Sensor Circuit Bank 1 Sensor 1
- P0547Exhaust Gas Temperature Sensor Circuit Bank 2 Sensor 1
- P2466Exhaust Gas Temperature Sensor Circuit Bank 2 Sensor 3
- P246EExhaust Gas Temperature Sensor Circuit Bank 1 Sensor 4
- P2480Exhaust Gas Temperature Sensor Circuit Bank 2 Sensor 3
- P2EA1Exhaust Gas Temperature Sensor Circuit Bank 1 Sensor 6
- P2427EGR Cooling Valve Control Circuit High
- P2428Exhaust Gas Temperature Too High Bank 1
- P2429Exhaust Gas Temperature Too High Bank 2
- P242BExhaust Gas Temperature Sensor Circuit Range or Performance Bank 1 Sensor 3
- P242CExhaust Gas Temperature Sensor Circuit Low Bank 1 Sensor 3
- P242DExhaust Gas Temperature Sensor Circuit High Bank 1 Sensor 3
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.