Allison transmission fault codes

C Low voltage signal to the inclusion of retarder Off. Retarder is not included.

The loss of one or more gears could be experienced depending on transmission condition. TR-P sensor circuit duty cycle low input. TR-P sensor signal frequency is out of normal range. TR-P sensor error detected. Engine may not crank. TFT out of range during onboard diagnostics.

Allison transmission fault codes

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Skip carousel. Display goes off on. Symptom No 5th or 6th gears.

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Access to Allison HUB is available to everyone. Likewise, Allison HUB provides approximately 1, Allison Authorized Distributors and Dealers worldwide additional resources that support the service of Allison transmissions. Allison also offers Allison HUB Premium, a subscription service, which is available to all global customers and provides premium Allison HUB access to official Allison service information, technical publications and literature. Your transmission can be identified through the use of the transmission serial number here. Transmission parts groups and subassemblies can be found in the Parts Catalog here. Fluid and filter change intervals can be found here. All maintenance, troubleshooting, repair and overhaul information can be found on ePubs. RMI content can be found by searching by topic, product family, or document type here. Parts identification can be found here. If applicable, field actions and recall information for your specific transmission can be found here.

Allison transmission fault codes

Allison Transmission is dedicated to providing our customers and technicians with the latest technical information and resources. All Allison Authorized Distributors and Dealers have the right tools, training and parts. Given their extensive experience and knowledge, they are always your first choice to properly service your Allison Automatic. We continually invest in our tools and training to help ensure that you will see the full value of your investment in our product. Allison offers access to fleets, end-users and technicians to the right tools specified for your Allison Automatic, as well as extensive knowledge through our online service tool portals. Each Allison DOC Subscription Service software product requires a separate valid, time-based subscription license to activate the product. Licenses for each of the above listed products can be purchased through Noregon Systems' Allison Web Store. Allison Transmission works with OEMs and independent third parties, through a Copyright License Agreement, in the development of generic diagnostic tools to establish serial communication between Allison electronic control units and diagnostic scan tools. To learn more, please submit a request by contacting your local Allison office, click here.

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U An error occurred while communicating with the secondary switch gear ON. Close suggestions Search Search. Display goes off on. Open navigation menu. Engine may not crank. Culture Documents. Only 1st or 3rd gears availabl e. Circuit open or TCM driver failure during on-board diagnostics. Carousel Previous. TFT out of range during onboard diagnostics. Carousel Previous. Carousel Next. Voltage through PC-A solenoid is checked. C High voltage signal at the inclusion of retarder Off. Warm or cool engine to normal operating temperature.

I have a Newmar Dutch Star motorhome with an allison transmission. Gauges will not register when transmission is put in reverse.

Professional Documents. Circuit failure or TCM driver failure. Uploaded by asdrubal lara. Only 1st and 2nd gear availabl e. Only 1st and 3rd gears availabl e. Open circuit: TCC never engages. Measuring Circuits From Everand. Symptom Open circuit: TCC never engages. TFT out of range during onboard diagnostics. Professional Documents. Uploaded by Luis Gongora. No 1st, 2nd, 3rd, 4th or 6th gears availabl e. May also generate by some other non-electrical transmission hardware system. Checklist Checklist.