AutoCodes - Dodge - U1421 DODGE

U1421 DODGE Code - Implausible Ignition Key Off Time Received

Repair Importance Level: 3/3
Repair Difficulty Level: 3/3
Table of contents

|U1421 DODGE code possible causes

  • Faulty Body Control Module (BCM)
  • Body Control Module (BCM) harness is open or shorted
  • Body Control Module (BCM) circuit poor electrical connection
  • Faulty Powertrain Control Module (PCM)

|How do I fix the U1421 DODGE code?

Check the "Possible Causes" listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector's pins.

|Cost of diagnosing the U1421 DODGE code

Labor: 1.0

The cost of diagnosing the U1421 DODGE code is 1.0 hour of labor. The auto repair's diagnosis time and labor rates vary by location, vehicle's make and model, and even your engine type. Most auto repair shops charge between $75 and $150 per hour.

|What are U1421 DODGE code possible symptoms?

  • Engine Light ON (or Service Engine Soon Warning Light)

|U1421 DODGE code description

The Body Control Module (BCM) monitors the time the ignition is in the off or accessory position between key cycles and then broadcasts the signal called Ignition Off Time (IOT) via the CANC Bus. The Powertrain Control Module (PCM) saves the value from a previous key cycle into powerdown flash and if certain When Monitored conditions are met compares to the current value. If the Set Conditions are met, then a fault U1421 is set indicating the timer is stuck. If this fault becomes active the PCM will light the MIL light immediately. If the MIL is set and the fault goes stored the PCM turns off the MIL after 3 consecutive drive cycles. If the difference between two Ignition Off Times (IOT) sent from the BCM to the PCM during two separate diagnostic decisions is less than 3 minutes for 5 consecutive decisions this fault will set.
OBDII Code U1421 Dodge - Implausible Ignition Key Off Time Received -

|Need more information with the U1421 DODGE code?

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|Need help with a U1421 DODGE code?

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|U1421 DODGE code comments

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