AutoCodes – Generic – P0435

P0435 Code - Catalyst Temperature Sensor Circuit Bank 2 Sensor 1

Quick Answer

The Engine Control Module (ECM) monitors the Catalyst Temperature Sensor Circuit Performance, which measures the temperature of the catalyst. Common causes include Faulty Catalyst Temperature Sensor, Catalyst Temperature Sensor harness is open or shorted, Catalyst Temperature Sensor circuit poor electrical connection. Severity is Moderate - service should be scheduled soon. The vehicle may still be drivable for short trips if it runs normally, but avoid hard driving and repair it soon.

What it means: P0435 indicates Catalyst Temperature Sensor Circuit Bank 2 Sensor 1.
Common causes: Common causes include Faulty Catalyst Temperature Sensor, Catalyst Temperature Sensor harness is open or shorted, Catalyst Temperature Sensor circuit poor electrical connection.
Severity: Moderate - service should be scheduled soon.
Can I drive?: The vehicle may still be drivable for short trips if it runs normally, but avoid hard driving and repair it soon.

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Code Popularity 21,699

How popular is this code, among other codes? Low

Repair Importance Level

Moderate (Service soon) (2 / 3)

Repair Difficulty Level

Intermediate (2 / 3)

What is this?

Table of contents Created and updated by William Orellana on Apr 18, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
Comments
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Code P0435 Description

The Engine Control Module (ECM) monitors the Catalyst Temperature Sensor Circuit Performance, which measures the temperature of the catalyst. Catalyst Temperature Sensor function by increasing their resistance with increasing exhaust gas temperature. The ECM sets the OBDII code when the Catalyst Temperature Sensor signal is not to factory specifications.

OBDII Code P0435 - Catalyst Temperature Sensor Circuit Bank 2 Sensor 1 - AutoCodes.com — P0435 Code - Catalyst Temperature Sensor Circuit Bank 2 Sensor 1

What does this mean?

What are the Possible Causes of the DTC P0435?

Faulty Catalyst Temperature Sensor
Catalyst Temperature Sensor harness is open or shorted
Catalyst Temperature Sensor circuit poor electrical connection

How to Fix the DTC P0435?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0435 code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

Need more information about the P0435 code?

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About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.