OBD Guide
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P11FF

Fuel Pump Command Signal Message Counter Incorrect

P11FF is an OBD-II diagnostic trouble code meaning: Fuel Pump Command Signal Message Counter Incorrect. Common causes: fuel pump malfunction, problems in the fuel pump electrical circuit. Estimated repair cost: $17–89.

Severity
⚠️ Medium
Can you drive?
Yes, but get it checked soon
Approx. repair cost
$17–89 (est.)

Symptoms

  • Unstable engine operation
  • Difficulty starting the engine
  • Loss of power during acceleration
  • Increased fuel consumption
  • Check Engine Light Is On

Causes

  • Fuel pump malfunction
  • Problems in the fuel pump electrical circuit
  • Fuel pump relay malfunction
  • Errors in ECU software
  • Wiring harness damage

How to Fix

  1. Check the condition of the fuel pump
  2. Diagnose the electrical circuit of the fuel pump
  3. Check fuel pump relay
  4. Update ECU software
  5. Inspect and, if necessary, replace the wiring harness

Related codes

P11FEP11FDP11FC

FAQ

What does the P11FF code mean?

P11FF is an OBD-II diagnostic trouble code that indicates: Fuel Pump Command Signal Message Counter Incorrect

What causes a P11FF error code?

The most common causes of P11FF include: Fuel pump malfunction; Problems in the fuel pump electrical circuit; Fuel pump relay malfunction; Errors in ECU software.

How do I fix a P11FF diagnostic trouble code?

To fix P11FF: Check the condition of the fuel pump. Diagnose the electrical circuit of the fuel pump. Check fuel pump relay. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P11FF?

Yes, but get it checked soon

How much does it cost to fix P11FF?

The estimated repair cost for P11FF is $17–89. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat