P0424

Heated Catalyst Temperature Below Threshold Bank 1

Severity

⚠️ Medium

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$111–333 (est.)

Symptoms

Increased fuel consumption
Reduced engine power
Unpleasant exhaust smell
Check Engine Light Is On

Causes

Catalytic converter heating element malfunction
Open or short circuit in the heater circuit
Malfunction of the catalytic converter temperature sensor
Mechanical damage to the catalytic converter
Wiring Harness Problems

How to Fix

Check the condition of the catalytic converter
Test the heating element circuit
Replace faulty heating element
Check and replace wiring harness if necessary
Reset the error code and check if it returns

Related codes

P0420 P0430 P0135