OBD Guide
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P3102

Cylinder 1 High-Pressure Fuel Injector Low Side Circuit High

P3102 is an OBD-II diagnostic trouble code meaning: Cylinder 1 High-Pressure Fuel Injector Low Side Circuit High. Common causes: broken or damaged wires to the injector, oxidation of contacts in the injector connector. Estimated repair cost: $17–89.

Severity
⚠️ Medium
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$17–89 (est.)

Symptoms

  • Unstable engine operation
  • Misfire in cylinder 1
  • Reduced engine power
  • Increased fuel consumption
  • Check Engine Light Is On

Causes

  • Broken or damaged wires to the injector
  • Oxidation of contacts in the injector connector
  • Cylinder 1 injector malfunction
  • Problems with the engine control unit
  • Short circuit in control circuit

How to Fix

  1. Check the integrity of the wiring to the injector
  2. Inspect and clean the injector connector contacts
  3. Check injector resistance
  4. Test the control signal from the ECU
  5. If necessary, replace the injector or wiring

Related codes

P3100P3101P3103

FAQ

What does the P3102 code mean?

P3102 is an OBD-II diagnostic trouble code that indicates: Cylinder 1 High-Pressure Fuel Injector Low Side Circuit High

What causes a P3102 error code?

The most common causes of P3102 include: Broken or damaged wires to the injector; Oxidation of contacts in the injector connector; Cylinder 1 injector malfunction; Problems with the engine control unit.

How do I fix a P3102 diagnostic trouble code?

To fix P3102: Check the integrity of the wiring to the injector. Inspect and clean the injector connector contacts. Check injector resistance. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P3102?

Limited driving only, diagnose soon

How much does it cost to fix P3102?

The estimated repair cost for P3102 is $17–89. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat