OBD Guide

P0395

Cylinder 1 Pressure Sensor Circuit

P0395 is an OBD-II diagnostic trouble code meaning: Cylinder 1 Pressure Sensor Circuit. Common causes: open or shorted wiring harness, cylinder pressure sensor malfunction. Estimated repair cost: $56–167.

Severity
⚠️ Medium
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$56–167 (est.)

Symptoms

  • Unstable engine operation
  • Power reduction
  • Increased fuel consumption
  • Check Engine light comes on

Causes

  • Open or shorted wiring harness
  • Cylinder pressure sensor malfunction
  • Poor contact in the connector
  • Problems with the ECU

How to Fix

  1. Check the integrity of the wiring harness
  2. Check the contacts in the sensor connector
  3. Replace pressure sensor if necessary
  4. Flash or replace the ECU (rarely)

Related codes

Error P0395 by Vehicle Brand

FAQ

What does the P0395 code mean?

P0395 is an OBD-II diagnostic trouble code that indicates: Cylinder 1 Pressure Sensor Circuit

What causes a P0395 error code?

The most common causes of P0395 include: Open or shorted wiring harness; Cylinder pressure sensor malfunction; Poor contact in the connector; Problems with the ECU.

How do I fix a P0395 diagnostic trouble code?

To fix P0395: Check the integrity of the wiring harness. Check the contacts in the sensor connector. Replace pressure sensor if necessary. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P0395?

Limited driving only, diagnose soon

How much does it cost to fix P0395?

The estimated repair cost for P0395 is $56–167. Actual cost depends on your vehicle, location, and labor rates.

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