OBD Guide
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P1188

Fuel Pressure Monitoring - Leakage

P1188 is an OBD-II diagnostic trouble code meaning: Fuel Pressure Monitoring - Leakage. Common causes: damage to the fuel line, fuel pump malfunction. 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
  • Power reduction
  • Increased fuel consumption
  • Difficulty starting the engine
  • Check Engine Light Is On

Causes

  • Damage to the fuel line
  • Fuel pump malfunction
  • Problems with the fuel pressure regulator
  • Leak in fuel tank
  • Fuel filter clogged

How to Fix

  1. Check fuel lines for leaks
  2. Check the operation of the fuel pump
  3. Inspect the fuel pressure regulator
  4. Replace damaged components
  5. Check the fuel tank for leaks

Related codes

P1187P1189P1190

Error P1188 by Vehicle Brand

BMWBuickCadillacChevroletChryslerFordGMGMCJaguarLincolnMercuryOldsmobileSaturnVolkswagen

FAQ

What does the P1188 code mean?

P1188 is an OBD-II diagnostic trouble code that indicates: Fuel Pressure Monitoring - Leakage

What causes a P1188 error code?

The most common causes of P1188 include: Damage to the fuel line; Fuel pump malfunction; Problems with the fuel pressure regulator; Leak in fuel tank.

How do I fix a P1188 diagnostic trouble code?

To fix P1188: Check fuel lines for leaks. Check the operation of the fuel pump. Inspect the fuel pressure regulator. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P1188?

Yes, but get it checked soon

How much does it cost to fix P1188?

The estimated repair cost for P1188 is $17–89. Actual cost depends on your vehicle, location, and labor rates.

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