P2032Exhaust Gas Temperature Sensor Circuit Low (Bank 1 Sensor 2)
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Matters for the ITP
- How the car detects it
- P2032 means the signal of exhaust gas temperature sensor 2 on bank 1 is below its valid range. What that means electrically depends on the sensor type. On the Opel/GM 2.0 CDTi in the Saab 9-5 (2010) sensor 2 sits in the particulate filter and its voltage falls as it gets hotter, so a reading below 0.4 V for more than 1 s points to a short to ground; the code is Type A there. GM's 2009 Duramax uses the opposite characteristic and fails below 0.307 V, equivalent to -40 °C, for 300 s, which is typical of an open or grounded signal. GM's 2018 diesels compare against a resistance-equivalent limit below 142 Ω as a Type B code, Ford's 2023 diesels against 0.10 V within 2 s. So check the wiring diagram before deciding whether low means a short or an open. Without the sensor the ECM cannot control filter temperature and usually blocks regeneration.
- What you may notice
- Malfunction indicator lamp on
- DPF regeneration inhibited, soot load rises
- Likely causes
- LikelySignal wire chafed to ground on the exhaust
- PossibleInternal sensor failure
- PossibleDamaged or corroded connector
- Inspection (ITP)
- Matters for the ITP. While the check-engine light is on, the car fails the emissions check.
- Repair
- Medium · Often possible to do yourself.Typical cost: €60 – €300
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.