1999 AUDI A3

1.8L Turbo I4 QuattroFWDAUTOMATICgasturbo
Founding sponsor spot is openYour name on every procedure for this vehicle, permanently.Sponsor — $99 →
P1213high severityPowertrain

Cylinder 1 Fuel Injector Short to Positive

on 1999 Audi A3 1.8L Turbo I4 Quattro · FWD

What this code means

The ECU detected a short to positive (battery voltage) in the Cylinder 1 fuel injector circuit. This prevents proper injector control and causes a misfire or over-fueling condition on that cylinder.

Symptoms

  • Check Engine Light
  • Misfire on Cylinder 1
  • Rough idle
  • Possible rich condition
  • Reduced power

Common causes

  • Damaged injector wiring shorted to power
  • Faulty fuel injector Cylinder 1
  • Connector damage or melted wire
  • ECU injector driver failure

Diagnostic steps

  1. Test injector resistance Cylinder 1
  2. Inspect wiring for damage or shorts to power
  3. Check injector connector
  4. Swap injector with another cylinder to isolate
  5. Test ECU driver output

Repair notes

Repair the shorted wiring or replace the faulty fuel injector on Cylinder 1.

Other Powertrain codes on this vehicle

⚠ STILL BEHIND THE PAYWALL
The 1999 Audi A3 repair data is incomplete because no one has sponsored it yet. For $99, we generate the full step-by-step procedures, then fact-check them with a second AI pass and your expert review. Your name on every procedure, permanently.
The same data would cost $169/mo from Mitchell1 or $30/year from ALLDATAdiy — and you'd be renting access, not freeing it. Sponsor once, free forever.
Sponsor the Audi A3 — $99 →
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 →