OBD Guide
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P1201

Fuel System Failure Caused No. 1 Cylinder Misfire

P1201 is an OBD-II diagnostic trouble code meaning: Fuel System Failure Caused No. 1 Cylinder Misfire. Common causes: malfunction of the fuel injector of cylinder 1, fuel injector clogged. Estimated repair cost: $17–89.

Severity
⚠️ Medium
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$17–89 (est.)

Symptoms

  • The engine runs rough or rough
  • Reduced engine power
  • Increased fuel consumption
  • Check Engine light comes on
  • Engine vibration at idle

Causes

  • Malfunction of the fuel injector of cylinder 1
  • Fuel injector clogged
  • Problems with the fuel pump
  • Low pressure in the fuel system
  • Faulty wiring to cylinder 1 injector

How to Fix

  1. Check the condition of the fuel injector of cylinder 1
  2. Test the pressure in the fuel system
  3. Check the wiring to the injector
  4. Clean or replace fuel injector
  5. Check the operation of the fuel pump

Related codes

P0201P0301P0171

Error P1201 by Vehicle Brand

AcuraBuickCadillacChevroletChryslerGMGMCHondaInfinitiJaguarOldsmobileSaturnVolkswagen

FAQ

What does the P1201 code mean?

P1201 is an OBD-II diagnostic trouble code that indicates: Fuel System Failure Caused No. 1 Cylinder Misfire

What causes a P1201 error code?

The most common causes of P1201 include: Malfunction of the fuel injector of cylinder 1; Fuel injector clogged; Problems with the fuel pump; Low pressure in the fuel system.

How do I fix a P1201 diagnostic trouble code?

To fix P1201: Check the condition of the fuel injector of cylinder 1. Test the pressure in the fuel system. Check the wiring to the injector. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P1201?

Limited driving only, diagnose soon

How much does it cost to fix P1201?

The estimated repair cost for P1201 is $17–89. Actual cost depends on your vehicle, location, and labor rates.

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