Allison WTEC II Fault Code: 13 PID: SPN: 23 FMI: ECU input voltage, high
Main code 13 indicates either a high or low input voltage. High voltage is over 35V.
In the event of a power loss, the transmission fails to the ranges indicated in the following, depending upon which latch valve releases ?rst
Possible causes:
1) Faulty vehicle alternator
2) Faulty vehicle voltage regulator
![International Truck ISIS - Oncommand Service Information Q4.2020 [04.2020]](https://www.ecuforcetruck.com/wp-content/uploads/2022/01/OnCommand-2020-1-300x300.png)
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Sale!
Allison Transmission – WTEC 2 MD/HD/B SERIES TRANSMISSIONS
Allison Original price was: $20.00.$16.00Current price is: $16.00. -
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