P2032: Exhaust Gas Temperature Sensor Circuit Low — Bank 1 Sensor 2
What to do
Regeneration will be suspended, so expect a particulate filter warning in time. Ask for the wiring along the exhaust to be inspected rather than only the sensor — heat-damaged insulation is a very common cause here.
What this code means
The exhaust gas temperature circuit reads below its valid range, normally a short to ground. Depending on the sensor type this reads as either an impossibly high or an impossibly low temperature, and both prevent regeneration — the module will not start a cycle it cannot monitor, and will abort one that appears to be running away.
The wiring is the first place to look. These harnesses are routed along or near the exhaust, and insulation that has hardened and cracked with heat leaves a conductor touching a hot metal surface, which is a short to ground by the most literal route available.
Likely causes
Start here
- Heat damage to sensor or wiring · moderate
- Wiring shorted to ground · moderate
- Faulty exhaust gas temperature sensor · moderate
Less common
- Corroded or loose connector · easy
Symptoms
Components involved
Information, not instruction
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Have anything you intend to act on checked by a trained person against the manufacturer's own procedure for your vehicle. Nothing here replaces that procedure.
Community experience
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