P0435 Fault Code

Catalyst Temperature Sensor (Bank 2 Sensor 1)

• What does that mean?
• Symptoms
• Causes
• Solutions

The P0435 fault code indicates an issue with the Catalyst Temperature Sensor located on Bank 2, specifically Sensor 1. This sensor plays a crucial role in monitoring the temperature of the catalytic converter, ensuring it operates within the optimal range. If the sensor detects abnormal temperature readings, it triggers the check engine light to alert the driver to a potential issue with the catalytic system.

What are the symptoms of the P0435 code?

Symptoms associated with the P0435 code may include:

• Check engine light illuminated on the dashboard
• Poor engine performance or decreased fuel efficiency
• Increased emissions due to catalytic converter inefficiency
• Unusual odor from exhaust gases if the catalytic converter is failing

What causes the P0435 code?

Common causes for the P0435 code include:

• Faulty Catalyst Temperature Sensor (Bank 2 Sensor 1)
• Wiring issues such as damaged or corroded connectors leading to poor signal quality
• Exhaust leaks that may skew temperature readings
• Faulty catalytic converter affecting temperature responses

How to fix P0435?

To resolve the P0435 fault code, the following steps are typically recommended:

• Inspect the wiring and connectors related to the Catalyst Temperature Sensor for damage or corrosion; repair as necessary.
• Test and, if needed, replace the Catalyst Temperature Sensor (Bank 2 Sensor 1).
• Check for exhaust leaks in the vicinity of the catalytic converter.
• If the catalytic converter is found to be faulty, consider replacing it to restore proper function.