Back to 2015 Audi A6

2015 AUDI A6

3.0L Supercharged V6•AWD•AUTOMATIC•gas•supercharged
4 active safety recalls on this vehicle — view recalls
Repairs0Labor991Torque6374Fluid15DTC1824Battery0Maintenance0Recalls4
P0137moderate severityPowertrain

O2 Sensor Circuit Low Voltage Bank 1 Sensor 2

on 2015 Audi A6 3.0L Supercharged V6 · AWD

What this code means

The downstream O2 sensor on Bank 1 is reading low voltage consistently.

Symptoms

  • Check Engine Light
  • Failed emissions

Common causes

  • Faulty sensor
  • Exhaust leak after cat
  • Wiring short to ground

Diagnostic steps

  1. Test sensor voltage
  2. Check for exhaust leaks
  3. Inspect wiring

Repair notes

Replace sensor or repair leak.

Other Powertrain codes on this vehicle

Building an app?
Free API access to all this data — 50 requests/day, no card required.
Get an API key →
Run a shop?
Manage repairs, estimates, and customers with ShopBase — $249/mo, all features included.
Try ShopBase →