U029D - Lost Communication With NOX Sensor A
WARNING: This page is about a different car, the 2012 Ford Pickup, 2012 Ford F550 Super Duty, 2012 Ford F450 Super Duty, and 2012 Ford Cab & Chassis. However, it is still accessible from the selected car via links, so may be relevant.
U029D - LOST COMMUNICATION WITH NOX SENSOR A
| Description: The PCM continuously monitors the controller area network (CAN) for messages from nitrogen oxide (NOx) module. This DTC sets when the PCM does not receive the NOx module message within the defined amount of time. | |||
Possible Causes:
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| Diagnostic Aids:
The presence of this DTC may indicate that the vehicle is operating in derate mode and may experience a loss of power. After repair, the vehicle may still display a reductant system warning message. Drive the vehicle until the reductant system warning message has cleared from the instrument cluster message center. |
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| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to PINPOINT TEST RD . | ||