OBD-II reference

All 9.533 generic OBD-II codes, explained in detail.

Causes, inspection steps and sources — a comprehensive DIY archive. Created and maintained with love for the detail. Good luck and have fun!

Powertrain generic / SAE

P0546

Exhaust Gas Temperature Sensor Bank 1 Sensor 1 High

The exhaust gas temperature sensor signal at bank 1, sensor 1 is above the upper diagnostic threshold. Typically open circuit or short to power.

SystemPowertrain
Typegeneric / SAE
GroupP0
Range / number5 / 46

Possible causes

  • Sensor open internally high
  • Wiring open or disconnected medium

Inspection / repair

  • Difficulty: medium
  • DIY: shop recommended
  • Estimated cost: 120–500 €
  • Estimated time: 0.5–2 h
  • Component: exhaust gas temp sensor
  • Component: sensor wiring
  • MIL / check engine light
  • emissions-relevant

Sources

References

How to read OBD-II codes

The first letter names the vehicle system, the second digit distinguishes generic from manufacturer-specific, the remaining digits group fault area and number.

PPowertrain: engine, transmission, emissions
BBody: chassis trim, comfort, interior
CChassis: suspension, brakes, steering
UNetwork: CAN, control modules, communication