P0435
PowertrainTemperature Sensorlow severityCatalyst Temperature Sensor Circuit (Bank 2)
What P0435 Means
The catalyst temperature sensor on bank 2 is out of its expected range or has a circuit fault. The PCM cannot properly monitor catalytic converter temperature.
Symptoms
- Check engine light on
- Possible failed emissions test
- No obvious drivability change
Common Causes
- Faulty catalyst temperature sensor
- Damaged wiring or connector
- Corroded sensor terminals
- Bad PCM
Diagnostic Steps
- Retrieve code and freeze frame
- Inspect sensor and wiring on bank 2
- Measure sensor resistance and signal
- Replace temperature sensor and retest
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Budget handheld~$40
ANCEL AD410 →
No-phone-needed handheld — reads, clears, live data, freeze frame.
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Serious DIY~$100
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Autel MaxiCOM MK808S →
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✓ Autel official store
Pro diagnostics$1,500+
Autel MaxiSys MS906 Pro →
Full-system pro platform — topology mapping, ECU coding, the works.
✓ Autel official store
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