Catalyst Temperature Sensor (Bank 2)
What does P0435 mean?
The P0435 code means the vehicle's onboard diagnostic system has detected: Catalyst Temperature Sensor (Bank 2). This is a low severity code.
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
Step-by-Step Diagnostic Procedure
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Read Bank 2 catalyst temperature PID on a scan tool -- should increase as the engine warms up
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Inspect the Bank 2 sensor connector for corrosion
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Measure sensor resistance at various temperatures and compare to specifications
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Check wiring continuity from sensor to ECM
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Replace the sensor if readings are out of specification
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.