Error code

OBD2 P0512

OBD2P0512
Diagnostic Trouble Code· Standard OBD-II fault code read from the vehicle's onboard diagnostics.

What it means

Starter Request Circuit.

Severity

moderateThe vehicle may still be drivable, but starting problems can occur.

Summary

P0512 indicates a malfunction in the starter request circuit, which is part of the vehicle's immobilizer system responsible for enabling engine starting based on transponder signal recognition.

Symptoms

  • Delayed or extended cranking
  • Cranking but no starting
  • No cranking and no starting

Common Causes

  • Faulty antenna ring
  • Weak battery or poor electrical connection
  • Fob battery issues in smart keys

Diagnosis

  1. Check battery voltage and connections.
  2. Inspect electrical system for loose or corroded connections.
  3. Test key fob battery by holding it near the start button.
  4. Replace faulty antenna ring if necessary.

Fixes

  • Replace faulty antenna ring

FAQ

What should I do if my car won't start and P0512 is set?

Check the battery voltage, inspect electrical connections, test key fob battery, and consider replacing the antenna ring.

Can a DIYer diagnose P0512 without professional tools?

DIY diagnosis can be limited due to lack of access to engine immobilizer system diagnostics. Professional help may be necessary for thorough diagnosis.

View source

Not affiliated with OBD2. Answer summarized from the manufacturer's manual linked above; consult that source for the authoritative procedure.

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