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. Transmission overtemp condition indicated.

Allison transmission fault codes

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P Low voltage in the circuit pressure modulation solenoid valve ON. Display goes off on U Inadequate information from the secondary gear ON. PF Auto determination of Off.

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I have a Newmar Dutch Star motorhome with an allison transmission. Gauges will not register when transmission is put in reverse. They register until put in reverse. What is the problem and what is the fix? Your email address will not be published. Use of materials placed on this site is allowed only if there is an active link to Truckmanualshub.

Allison transmission fault codes

To make work easier auto component makers have relied on the fault code system. These fault codes are supposed to cu the guesswork out of doing car repairs. The Allison fault code system uses 3 letters to identify the source and location of the problem. Those letters are C, P, and U. However, be careful of the instructions as they may throw the letter D in there as well. To learn these codes and how to read them, just continue to read our article. It has the information you want to know about so you can figure out your transmission issue faster than you could before the fault code system was implemented.

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Prohibition of work for the 1 St gear,. Skip carousel. Uploaded by Luis Gongora. U J data Off. Academic Documents. Enable N-D. Jump to Page. Personal Growth Documents. Symptom Open circuit: TCC never engages. No 5th or 6th gears. Open navigation menu.

Table Of Contents.

P Output speed sensor no signal ON. PE When flap auto definition ON. Close suggestions Search Search. Carousel Next. P Incorrect gear ratio on the back of the transfer ON. RERUN on-board diagnostics and cycle switch. U J data Off. Uploaded by Luis Gongora. Checklist Checklist. Is this content inappropriate? Prohibition on blocking P Low voltage control unit Off. U Loss of communication with the first switch gear ON. Symptom Action e.