OBD Guide
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P1185

Fuel Pressure Monitoring-Maximum Pressure Exceeded

P1185 is an OBD-II diagnostic trouble code meaning: Fuel Pressure Monitoring-Maximum Pressure Exceeded. Common causes: fuel pressure regulator malfunction, clogged fuel line. Estimated repair cost: $17–89.

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

Symptoms

  • Increased fuel consumption
  • Unstable engine operation
  • Power Loss
  • Smell of gasoline from the exhaust pipe
  • Check Engine Light Is On

Causes

  • Fuel pressure regulator malfunction
  • Clogged fuel line
  • Problems with the fuel pump
  • Fuel pressure sensor malfunction
  • Short circuit in the fuel pump control circuit

How to Fix

  1. Check fuel pressure using a pressure gauge
  2. Inspect the fuel line for blockages
  3. Check the operation of the fuel pressure regulator
  4. Test the fuel pump
  5. Check the fuel pressure sensor and its circuit

Related codes

P1186P1187P1188

Error P1185 by Vehicle Brand

BuickCadillacChevroletChryslerFordGMGMCJaguarLincolnMercuryOldsmobileSaturnVolkswagen

FAQ

What does the P1185 code mean?

P1185 is an OBD-II diagnostic trouble code that indicates: Fuel Pressure Monitoring-Maximum Pressure Exceeded

What causes a P1185 error code?

The most common causes of P1185 include: Fuel pressure regulator malfunction; Clogged fuel line; Problems with the fuel pump; Fuel pressure sensor malfunction.

How do I fix a P1185 diagnostic trouble code?

To fix P1185: Check fuel pressure using a pressure gauge. Inspect the fuel line for blockages. Check the operation of the fuel pressure regulator. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P1185?

Limited driving only, diagnose soon

How much does it cost to fix P1185?

The estimated repair cost for P1185 is $17–89. Actual cost depends on your vehicle, location, and labor rates.

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