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sprinkles08, ASE Certified Technician
Category: UK Car
Satisfied Customers: 23109
Experience:  ASE Master and Advanced level certified. Factory trained with 17 years dealership experience
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Cherokee 3.7 ltd: dash panel keeps cutting out.However the

Customer Question

dash panel keeps cutting out.However the engine runs fine and a diagnostic check shows all sensors working fine although it does throw up fault code 1698
Submitted: 2 years ago.
Category: UK Car
Expert:  sprinkles08 replied 2 years ago.

Hello and welcome to JustAnswer!

It will take some electrical testing at the time the problem is happening to diagnose it.

P1698 sets when the transmission control module isn't communicating with the powertrain control module. This could be the TCM itself, a bus communication issue or loss of power or ground to the TCM.

If the instrument cluster is completely shutting off then a loss of power or ground is likely. If the TCM issue is related then odds are a power feed is being lost to both.

If the gauges actually stop working and all warning lights come on then the communication bus is going down. This could be an internal failure in any module or it could be a short to power or ground on the PCI bus circuit.