OBD Guide

P3150

Cylinder 1 High-Pressure Fuel Injector High Side Circuit High

P3150 is an OBD-II diagnostic trouble code meaning: Cylinder 1 High-Pressure Fuel Injector High Side Circuit High. Common causes: open or short circuit in the injector control circuit, malfunction of the high pressure injector of cylinder no. 1. Estimated repair cost: $56–278.

Severity
⚠️ Medium
Can you drive?
Yes, but get it checked soon
Approx. repair cost
$56–278 (est.)

Symptoms

  • Check Engine light comes on
  • The engine runs rough
  • Reduced engine power
  • Deteriorating fuel economy
  • Possible misfires

Causes

  • Open or short circuit in the injector control circuit
  • Malfunction of the high pressure injector of cylinder No. 1
  • Problems with wiring or connectors
  • Engine control module (ECU) malfunction
  • Wiring harness damage

How to Fix

  1. Check the injector wiring and connectors for damage.
  2. Measure the injector resistance to ensure it meets manufacturer specifications.
  3. Check the voltage at the injector control circuit.
  4. Replace the faulty high pressure injector.
  5. Check the ECU for damage or malfunction.

Related codes

FAQ

What does the P3150 code mean?

P3150 is an OBD-II diagnostic trouble code that indicates: Cylinder 1 High-Pressure Fuel Injector High Side Circuit High

What causes a P3150 error code?

The most common causes of P3150 include: Open or short circuit in the injector control circuit; Malfunction of the high pressure injector of cylinder No. 1; Problems with wiring or connectors; Engine control module (ECU) malfunction.

How do I fix a P3150 diagnostic trouble code?

To fix P3150: Check the injector wiring and connectors for damage.. Measure the injector resistance to ensure it meets manufacturer specifications.. Check the voltage at the injector control circuit.. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P3150?

Yes, but get it checked soon

How much does it cost to fix P3150?

The estimated repair cost for P3150 is $56–278. Actual cost depends on your vehicle, location, and labor rates.

See also: Russian version · NationStat