OBD Guide

P2424

HC Adsorption Catalyst Efficiency Below Threshold Bank 2

P2424 is an OBD-II diagnostic trouble code meaning: HC Adsorption Catalyst Efficiency Below Threshold Bank 2. Common causes: worn or damaged catalytic converter, malfunction of oxygen sensors. 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
  • Increased fuel consumption
  • Reduced engine power
  • Unusual odors from the exhaust system
  • Dips during acceleration

Causes

  • Worn or damaged catalytic converter
  • Malfunction of oxygen sensors
  • Leaks in the exhaust system
  • Problems with the fuel system
  • Mechanical damage to the catalyst

How to Fix

  1. Check the condition of the catalytic converter
  2. Diagnose the operation of oxygen sensors
  3. Check the exhaust system for leaks
  4. Carry out computer diagnostics of the engine
  5. If necessary, replace the catalyst

Related codes

Error P2424 by Vehicle Brand

FAQ

What does the P2424 code mean?

P2424 is an OBD-II diagnostic trouble code that indicates: HC Adsorption Catalyst Efficiency Below Threshold Bank 2

What causes a P2424 error code?

The most common causes of P2424 include: Worn or damaged catalytic converter; Malfunction of oxygen sensors; Leaks in the exhaust system; Problems with the fuel system.

How do I fix a P2424 diagnostic trouble code?

To fix P2424: Check the condition of the catalytic converter. Diagnose the operation of oxygen sensors. Check the exhaust system for leaks. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P2424?

Yes, but get it checked soon

How much does it cost to fix P2424?

The estimated repair cost for P2424 is $56–278. Actual cost depends on your vehicle, location, and labor rates.

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