Error code

OBD2 P2045

OBD2P2045
Diagnostic Trouble Code· Standard OBD-II fault code read from the vehicle's onboard diagnostics.

What it means

Reductant Temperature Sensor Circuit High Input.

Severity

moderateCan continue driving but may cause emissions issues.

Summary

P2045 indicates that the reductant temperature sensor is providing an abnormally high input signal, likely indicating a malfunction or wiring issue with this sensor.

Common Causes

  • Wiring issues
  • Faulty reductant temperature sensor

Fixes

  • Replace the faulty reductant temperature sensor or repair any wiring issues.

Not affiliated with OBD2. Answer summarized from the manufacturer's manual linked above; consult that source for the authoritative procedure.