P046A

Catalyst Temperature Sensor 1/2 Correlation Bank 1

Severity

⚠️ Medium

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$56–167 (est.)

Symptoms

The Check Engine light comes on
Deterioration of vehicle dynamics
Increased fuel consumption

Causes

Malfunction of catalytic converter temperature sensor 1 or 2
Open or short circuit in the sensor wiring harness
Damage to the catalytic converter
Problems with the engine control unit

How to Fix

Check the serviceability of the catalytic converter temperature sensors
Check the integrity of the sensor wiring harness
Check the condition of the catalytic converter
If necessary, replace faulty components

Related codes

P0420 P0430 P046B