Catalyst Temperature Sensor (Bank 2)
The P0435 code means the vehicle's onboard diagnostic system has detected: Catalyst Temperature Sensor (Bank 2). This is a low severity code.
- Keep driving?
- Yes, but fix soon
- DIY difficulty
- moderate
- Estimated cost
- $80 - $300 (parts and labor)
Reads enhanced codes and shows real-time O2 sensor data. Verify the cat is actually bad before dropping $1,000+ on a replacement.
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Common Symptoms
- Check Engine Light illuminated
- No noticeable drivability issues
- ECM cannot monitor Bank 2 catalyst temperature
- Failed emissions test
Probable Causes (Ranked by Likelihood)
- Faulty Bank 2 catalyst temperature sensor Very High
- Open or shorted Bank 2 sensor wiring High
- Corroded Bank 2 sensor connector Moderate
- ECM Bank 2 sensor input circuit fault Low
Frequently Asked Questions
Can I drive with code P0435?
Yes. The Bank 2 catalyst temperature sensor fault does not affect engine performance. Catalyst monitoring on Bank 2 is disabled until repaired.
Is P0435 the Bank 2 equivalent of P0425?
Yes. P0425 covers the Bank 1 catalyst temperature sensor and P0435 covers Bank 2. Diagnostics are the same on the opposite exhaust bank.
Where is the Bank 2 catalyst temperature sensor?
It is threaded into the exhaust pipe near the Bank 2 catalytic converter. On V6 and V8 engines, Bank 2 is the side opposite cylinder 1.
Mechanics Guide Step-by-step diagnosis
Step-by-Step Diagnostic Procedure
-
Read Bank 2 catalyst temperature PID on a scan tool -- should increase as the engine warms up
-
Inspect the Bank 2 sensor connector for corrosion
-
Measure sensor resistance at various temperatures and compare to specifications
-
Check wiring continuity from sensor to ECM
-
Replace the sensor if readings are out of specification
Sources 2
This page is built from documented references. Verify against your own service info before repair work.
- SAE J2012Diagnostic Trouble Code Definitions (defines the generic OBD-II code ranges)
- Cross-checked against the SAE J2012:2002 DTC table (2026-08-27)archived scan of the SAE standard — readable copy, not SAE’s current edition
Commonly Affected Vehicles
- 2004-2016 Toyota Tundra V8
- 2005-2017 Lexus IS 350
- 2003-2015 Nissan Murano
- 2006-2018 Subaru Tribeca
- 2007-2019 Lexus GS 350
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