U1412 - Chrysler Diagnostic Trouble Code (DTC) Definition, Causes ...

Home ChryslerU1412 Chrysler Chrysler DTC U1412 Make: Chrysler Code: U1412 Definition: O2 Sensor Circuit Slow Response (Bank 1 Sensor 2) Description: The measured response time for oxgen sensor output, when the air/fuel ratio changes from rich to lean > 491 ms. The measured response time for oxgen sensor output, when the air/fuel ratio changes from lean to rich > 2000 ms. Cause:
  • Wiring harness between ECM and rear oxygen sensor needs repair.
  • Defective rear oxygen sensor.

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