OBD Guide
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P1251

Throttle Motor Circuit

P1251 is an OBD-II diagnostic trouble code meaning: Throttle Motor Circuit. Common causes: throttle motor malfunction, open or short circuit in wiring. Estimated repair cost: $33–167.

Severity
⚠️ Medium
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$33–167 (est.)

Symptoms

  • The engine goes into emergency mode
  • Floating idle speed
  • Loss of engine power
  • Check Engine light comes on
  • Acceleration problems

Causes

  • Throttle motor malfunction
  • Open or short circuit in wiring
  • Problems with connectors
  • Control unit malfunction
  • Mechanical sticking of the throttle valve

How to Fix

  1. Check the integrity of wiring and connectors
  2. Check the resistance of the throttle motor
  3. Clean throttle body
  4. Check the operation of the throttle valve on the stand
  5. If necessary, replace the throttle motor

Related codes

P1220P1221P1250

Error P1251 by Vehicle Brand

JaguarMazdaVolkswagen

FAQ

What does the P1251 code mean?

P1251 is an OBD-II diagnostic trouble code that indicates: Throttle Motor Circuit

What causes a P1251 error code?

The most common causes of P1251 include: Throttle motor malfunction; Open or short circuit in wiring; Problems with connectors; Control unit malfunction.

How do I fix a P1251 diagnostic trouble code?

To fix P1251: Check the integrity of wiring and connectors. Check the resistance of the throttle motor. Clean throttle body. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P1251?

Limited driving only, diagnose soon

How much does it cost to fix P1251?

The estimated repair cost for P1251 is $33–167. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat