Dash issues
Have a 2006 Thomas EF MVP bus. The instrument cluster and gauges, besides air pressure gauge and fuel gauge, works intermittent. Checked with cummins insite hooked to ECM . ECM is registered the values , the gauges are not showing the values. When ICU is not working, as well as gauges ,get a code on the dash 254 07. Anyone had this issue or have any direction to maybe start?
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