Clunky, bumpy shift

This TSB applies to 2011-2012 Chrysler 200/Avenger vehicles equipped with a 2.4L engine with California emissions, 50-state emissions or federal emissions and automatic transmission, built before July 21, 2012.

The customer may experience a MIL on. DTC P2173 may be stored (high airflow/vacuum leak detected/slow accumulation). The condition occurs after descending a long grade.

The customer may also experience any of the following shift concerns:

  • 3rd to 2nd downshift clunk or bump (2012 6-speed only)
  • 4th to 3rd downshift clunk or bump (2012 6-speed only)
  • 1st to 2nd upshift clunk or bump (2012 6-speed only)
  • 4th to 5th upshift clunk or bump (2012 6-speed only)
  • 5th to 6th upshift clunk or bump (2012 6-speed only)
  • RPM fluctuating or jerking between 60 mph and 70 mph while operating in cruise control (2011 and 2012 4-speed and 6-speed)

Reprogramming the PCM with wiTECH software 13.01 or higher is required to address this issue.

Using a scan tool (wiTECH) with the appropriate diagnostic procedures available in Tech CONNECT, verify that all engine systems are functioning properly. If DTCs other than P2173 are detected, record and repair as needed before proceeding further.

Install a battery charger to ensure that battery voltage does not drop below 13.2 volts. Do not allow voltage to climb higher than 13.5 volts during the flash process.

Reprogram the PCM following procedures in the service manual.After PCM reprogramming, clear any DTCs that may have been set in other modules.Type the necessary information on the authorized modifications label and attach it near the VECI label.

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