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2015 AUDI A6

3.0L Supercharged V6AWDAUTOMATICgassupercharged
4 active safety recalls on this vehicle — view recalls
Repairs0Labor991Torque6374Fluid15DTC1824Battery0Maintenance0Recalls4
P0231high severityPowertrain

Fuel Pump Secondary Circuit Low

on 2015 Audi A6 3.0L Supercharged V6 · AWD

What this code means

Low voltage in the fuel pump secondary (output) circuit.

Symptoms

  • Engine stalling
  • No start
  • Loss of power at high RPM

Common causes

  • Fuel pump failing
  • Corroded connector
  • High resistance wiring
  • Weak battery during cranking

Diagnostic steps

  1. Test voltage at pump connector
  2. Check connector
  3. Measure current draw

Repair notes

Replace fuel pump or repair wiring.

Other Powertrain codes on this vehicle

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