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2013 AUDI A6

3.0L Supercharged V6•AWD•AUTOMATIC•gas•supercharged
6 active safety recalls on this vehicle — view recalls
Repairs0Labor991Torque6374Fluid15DTC1810Battery0Maintenance0Recalls6
P0036low severityPowertrain

HO2S Heater Control Circuit Bank 1 Sensor 2

on 2013 Audi A6 3.0L Supercharged V6 · AWD

What this code means

The PCM detected a malfunction in the heater circuit of the downstream heated oxygen sensor (Bank 1, Sensor 2).

Symptoms

  • Check Engine Light
  • Failed emissions test
  • Poor catalyst monitoring

Common causes

  • Faulty O2 sensor heater
  • Blown fuse
  • Wiring issue

Diagnostic steps

  1. Check fuse
  2. Test heater resistance
  3. Inspect wiring
  4. Check PCM output

Repair notes

Replace downstream O2 sensor or repair wiring.

Other Powertrain codes on this vehicle

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