OBD Guide

P10E4

Valvetronic Relay Supply Voltage Circuit/Open

P10E4 is an OBD-II diagnostic trouble code meaning: Valvetronic Relay Supply Voltage Circuit/Open. Common causes: valvetronic relay power supply circuit open, faulty valvetronic relay. Estimated repair cost: $6–39.

Severity
⚠️ Medium
Can you drive?
Yes, but get it checked soon
Approx. repair cost
$6–39 (est.)

Symptoms

  • Unstable engine idling
  • Reduced engine power
  • Increased fuel consumption
  • Check engine light comes on
  • Problems starting the engine

Causes

  • Valvetronic relay power supply circuit open
  • Faulty Valvetronic relay
  • Damaged or blown fuse
  • Problems with wiring harness or contacts
  • Engine control module (ECU) malfunction

How to Fix

  1. Check Valvetronic circuit fuse
  2. Inspect the Valvetronic relay for damage
  3. Check the integrity of the wiring harness and contacts
  4. Test the power circuit with a multimeter
  5. If necessary, replace the relay or repair the wiring

Related codes

FAQ

What does the P10E4 code mean?

P10E4 is an OBD-II diagnostic trouble code that indicates: Valvetronic Relay Supply Voltage Circuit/Open

What causes a P10E4 error code?

The most common causes of P10E4 include: Valvetronic relay power supply circuit open; Faulty Valvetronic relay; Damaged or blown fuse; Problems with wiring harness or contacts.

How do I fix a P10E4 diagnostic trouble code?

To fix P10E4: Check Valvetronic circuit fuse. Inspect the Valvetronic relay for damage. Check the integrity of the wiring harness and contacts. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P10E4?

Yes, but get it checked soon

How much does it cost to fix P10E4?

The estimated repair cost for P10E4 is $6–39. Actual cost depends on your vehicle, location, and labor rates.

See also: Russian version · NationStat