OBD Guide
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P30DE

Fuel Rail Pressure Sensor 2 Signal Message Counter Incorrect

P30DE is an OBD-II diagnostic trouble code meaning: Fuel Rail Pressure Sensor 2 Signal Message Counter Incorrect. Common causes: fuel rail pressure sensor 2 malfunction, damage to wiring or connectors. Estimated repair cost: $17–56.

Severity
⚠️ Medium
Can you drive?
Yes, but get it checked soon
Approx. repair cost
$17–56 (est.)

Symptoms

  • Unstable engine operation
  • Power reduction
  • Increased fuel consumption
  • Difficulty starting the engine
  • Check Engine Light Is On

Causes

  • Fuel rail pressure sensor 2 malfunction
  • Damage to wiring or connectors
  • Problems with the engine control module
  • Fuel system contamination
  • Low pressure in the fuel system

How to Fix

  1. Check the condition of the fuel rail pressure sensor 2
  2. Check the integrity of wiring and connectors
  3. Check the pressure in the fuel system
  4. Clean the fuel system if necessary
  5. Replace fuel rail pressure sensor 2 if faulty

Related codes

P30DDP30DFP30E0

FAQ

What does the P30DE code mean?

P30DE is an OBD-II diagnostic trouble code that indicates: Fuel Rail Pressure Sensor 2 Signal Message Counter Incorrect

What causes a P30DE error code?

The most common causes of P30DE include: Fuel rail pressure sensor 2 malfunction; Damage to wiring or connectors; Problems with the engine control module; Fuel system contamination.

How do I fix a P30DE diagnostic trouble code?

To fix P30DE: Check the condition of the fuel rail pressure sensor 2. Check the integrity of wiring and connectors. Check the pressure in the fuel system. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P30DE?

Yes, but get it checked soon

How much does it cost to fix P30DE?

The estimated repair cost for P30DE is $17–56. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat