OBD Guide
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P15A0

Fuel Economy Mode Switch Circuit High Voltage

P15A0 is an OBD-II diagnostic trouble code meaning: Fuel Economy Mode Switch Circuit High Voltage. Common causes: fuel economy mode switch malfunction, short circuit in the circuit. Estimated repair cost: $6–33.

Severity
⚠️ Medium
Can you drive?
Yes, but get it checked soon
Approx. repair cost
$6–33 (est.)

Symptoms

  • Incorrect operation of the fuel economy mode
  • Increased fuel consumption
  • Check Engine Light Is On
  • Problems with switching driving modes

Causes

  • Fuel economy mode switch malfunction
  • Short circuit in the circuit
  • Wiring damage
  • Problems with the engine control unit
  • Contact corrosion

How to Fix

  1. Check fuel economy mode switch
  2. Check the integrity of wiring and contacts
  3. Measure the voltage in the circuit
  4. Check the operation of the engine control unit
  5. Replace faulty components

Related codes

P15A1P15A2P15A3

FAQ

What does the P15A0 code mean?

P15A0 is an OBD-II diagnostic trouble code that indicates: Fuel Economy Mode Switch Circuit High Voltage

What causes a P15A0 error code?

The most common causes of P15A0 include: Fuel economy mode switch malfunction; Short circuit in the circuit; Wiring damage; Problems with the engine control unit.

How do I fix a P15A0 diagnostic trouble code?

To fix P15A0: Check fuel economy mode switch. Check the integrity of wiring and contacts. Measure the voltage in the circuit. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P15A0?

Yes, but get it checked soon

How much does it cost to fix P15A0?

The estimated repair cost for P15A0 is $6–33. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat