OBD Guide
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P1235

Fuel Pump Control Out Of Range

P1235 is an OBD-II diagnostic trouble code meaning: Fuel Pump Control Out Of Range. Common causes: fuel pump malfunction, problems with the fuel pump relay. Estimated repair cost: $17–89.

Severity
🔴 High
Can you drive?
Do not drive — repair immediately
Approx. repair cost
$17–89 (est.)

Symptoms

  • Difficulty starting the engine
  • Unstable engine idling
  • Loss of power during acceleration
  • Stalling engine
  • Increased fuel consumption

Causes

  • Fuel pump malfunction
  • Problems with the fuel pump relay
  • Open or short circuit in control circuit
  • Engine control unit malfunction
  • Bad contacts in connectors

How to Fix

  1. Check the voltage in the fuel pump circuit
  2. Test the performance of the fuel pump relay
  3. Inspect the wiring harness for damage
  4. Check resistance and operation of the fuel pump
  5. If necessary, replace the fuel pump or relay

Related codes

P1233P1234P1236

Error P1235 by Vehicle Brand

FordJaguarLincolnMazdaMercury

FAQ

What does the P1235 code mean?

P1235 is an OBD-II diagnostic trouble code that indicates: Fuel Pump Control Out Of Range

What causes a P1235 error code?

The most common causes of P1235 include: Fuel pump malfunction; Problems with the fuel pump relay; Open or short circuit in control circuit; Engine control unit malfunction.

How do I fix a P1235 diagnostic trouble code?

To fix P1235: Check the voltage in the fuel pump circuit. Test the performance of the fuel pump relay. Inspect the wiring harness for damage. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P1235?

Do not drive — repair immediately

How much does it cost to fix P1235?

The estimated repair cost for P1235 is $17–89. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat