OBD Guide
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P1555

Electronic Variable Orifice Output

P1555 is an OBD-II diagnostic trouble code meaning: Electronic Variable Orifice Output. Common causes: open or short circuit in control circuit, electronic variable nozzle malfunction. Estimated repair cost: $17–89.

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

Symptoms

  • Reduced engine power
  • Increased fuel consumption
  • Rough engine operation
  • Check Engine Light Illuminates
  • Acceleration problems

Causes

  • Open or short circuit in control circuit
  • Electronic variable nozzle malfunction
  • Problems with the engine control unit (ECU)
  • Wiring harness damage
  • Contact corrosion

How to Fix

  1. Check the integrity of the control circuit
  2. Check the resistance and operation of the electronic adjustable nozzle
  3. Inspect the wiring harness for damage
  4. Check contacts for corrosion
  5. If necessary, replace faulty components

Related codes

P1556P1557

Error P1555 by Vehicle Brand

BuickCadillacChevroletChryslerGMGMCOldsmobileSaturnVolkswagen

FAQ

What does the P1555 code mean?

P1555 is an OBD-II diagnostic trouble code that indicates: Electronic Variable Orifice Output

What causes a P1555 error code?

The most common causes of P1555 include: Open or short circuit in control circuit; Electronic variable nozzle malfunction; Problems with the engine control unit (ECU); Wiring harness damage.

How do I fix a P1555 diagnostic trouble code?

To fix P1555: Check the integrity of the control circuit. Check the resistance and operation of the electronic adjustable nozzle. Inspect the wiring harness for damage. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P1555?

Yes, but get it checked soon

How much does it cost to fix P1555?

The estimated repair cost for P1555 is $17–89. Actual cost depends on your vehicle, location, and labor rates.

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