Back to 2013 BMW M3 E90

2013 BMW M3 E90

4.0L V8 S65RWDDCTgas
Repairs0Labor499Torque3925Fluid7DTC909Battery0Maintenance0Recalls0
P0327moderate severityPowertrain

Knock Sensor 1 Circuit Low Input Bank 1

on 2013 BMW M3 E90 4.0L V8 S65 · RWD

What this code means

Low voltage from knock sensor 1, Bank 1.

Symptoms

  • Check Engine Light
  • Reduced power

Common causes

  • Open circuit
  • Faulty sensor
  • Loose connector

Diagnostic steps

  1. Test voltage
  2. Check wiring
  3. Verify connector

Repair notes

Repair or replace sensor.

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 →