Powertrain
generic / SAE
P0548
Exhaust Gas Temperature Sensor Circuit Low Bank 2 Sensor 1
A general circuit fault is detected on the EGT sensor at bank 2 sensor 1 (typically just downstream of the turbo or before the catalyst). The ECU loses thermal protection feedback for the catalyst and DPF.
SystemPowertrain
Typegeneric / SAE
GroupP0
Range / number5 / 48
Possible causes
- Signal shorted to ground high
- Connector pins corroded - high contact resistance low
- Harness chafing through insulation low
Inspection / repair
- Difficulty: medium
- DIY: possible
- Estimated cost: 120–400 €
- Estimated time: 0.6–1.8 h
- Component: egt sensor b2s1
- MIL / check engine light
- emissions-relevant
Sources
References
sae:J2012