OBD-II Generic Error Code P2035: Exhaust Gas Temp Sensor B2S1 Range – How to Fix It

Q: Can I drive with error code P2035?

Yes, but it may cause reduced fuel economy, increased emissions, and potential damage to the catalytic converter over time. It's best to diagnose and fix the issue promptly.

Q: What causes P2035 besides a bad sensor?

Wiring issues, connector corrosion, exhaust leaks, or a faulty ECM can also trigger P2035. Always inspect wiring before replacing the sensor.

Q: How much does it cost to fix P2035?

If DIY, the sensor costs $30-$150. A mechanic may charge $100-$300 including labor and parts.

Q: Is Bank 2 Sensor 1 the same as upstream sensor?

Yes, Bank 2 Sensor 1 is the upstream exhaust gas temperature sensor for the bank opposite cylinder #1. It is located before the catalytic converter.

Q: Will clearing the code fix the problem permanently?

No, clearing the code only removes the error message. If the underlying issue is not resolved, the code will return.

Abstract

Error code P2035 means the Engine Control Module (ECM) has detected that the exhaust gas temperature sensor for Bank 2 Sensor 1 is reading outside its expected range. This sensor monitors the temperature of exhaust gases before they enter the catalytic converter. A faulty sensor or wiring issue can trigger this code, potentially affecting emissions and engine performance.