OBD Guide

P235B

Cylinder 10 Combustion Performance

P235B is an OBD-II diagnostic trouble code meaning: Cylinder 10 Combustion Performance. Common causes: faulty spark plug in cylinder 10, problems with the fuel injector of cylinder 10. Estimated repair cost: $17–89.

Severity
⚠️ Medium
Can you drive?
Yes, but get it checked soon
Approx. repair cost
$17–89 (est.)

Symptoms

  • Loss of engine power
  • Increased fuel consumption
  • Unstable engine idling
  • Jerking during acceleration
  • Check Engine Light Illuminates

Causes

  • Faulty spark plug in cylinder 10
  • Problems with the fuel injector of cylinder 10
  • Low compression in cylinder 10
  • Ignition coil malfunction
  • Air supply problems (air leaks)

How to Fix

  1. Check the condition of the spark plug in cylinder 10
  2. Diagnose fuel injector operation
  3. Check compression in cylinder
  4. Inspect the ignition coil and high-voltage wires
  5. Check the tightness of the intake tract

Related codes

Error P235B by Vehicle Brand

FAQ

What does the P235B code mean?

P235B is an OBD-II diagnostic trouble code that indicates: Cylinder 10 Combustion Performance

What causes a P235B error code?

The most common causes of P235B include: Faulty spark plug in cylinder 10; Problems with the fuel injector of cylinder 10; Low compression in cylinder 10; Ignition coil malfunction.

How do I fix a P235B diagnostic trouble code?

To fix P235B: Check the condition of the spark plug in cylinder 10. Diagnose fuel injector operation. Check compression in cylinder. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P235B?

Yes, but get it checked soon

How much does it cost to fix P235B?

The estimated repair cost for P235B is $17–89. Actual cost depends on your vehicle, location, and labor rates.

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