Vehicle Network Communication Error

[AlexBell]

2022 Ford Bronco Sport 1.5L – Complete Electrical/Network Failure – Looking for Diagnostic Help

I’m working on a 2022 Ford Bronco Sport 1.5L EcoBoost that suddenly developed a major electrical/network issue while driving.

The vehicle was in Drive when suddenly all the warning lights came on, followed by the instrument cluster completely shutting off. A “Vehicle Network Communication Error” message appeared.

I shut the vehicle off, and afterward it would not start back up.

I initially suspected the battery, so I installed a brand-new battery, but the problem remains.

Current symptoms:

• Instrument cluster: completely dead
• Ford logo: does not appear
• Fuel pump: does not prime
• Relay(s): clicking
• OBD-II port: has power
• Scan tool: powers up but has NO communication with the vehicle
• All fuses have been checked and appear good
• New battery installed with no change
• Vehicle does not start

Because the scan tool has power but cannot communicate, I’m suspecting a CAN/network, Gateway Module, BCM, PCM power/ground, or another module pulling down the network.

I’m currently planning to check CAN resistance between OBD pins 6 and 14, as well as power/grounds to the Gateway/PCM and the major network modules.

Has anyone experienced this exact issue on a 2021–2023 Bronco Sport? If so, what ended up being the cause/fix?

Looking for any known failures, TSBs, wiring diagrams, ground locations, or diagnostic procedures that could point me in the right direction.

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[Dude]

Haven’t heard of that issue before

But you said you were working on the 2022 Ford Bronco Sport 1.5L … can you provide details on what you were working on, did you buy the vehicle new and is there any know previous history of electrical problems?

 

[fjbear!]

2022 Ford Bronco Sport 1.5L – Complete Electrical/Network Failure – Looking for Diagnostic Help

I’m working on a 2022 Ford Bronco Sport 1.5L EcoBoost that suddenly developed a major electrical/network issue while driving.

The vehicle was in Drive when suddenly all the warning lights came on, followed by the instrument cluster completely shutting off. A “Vehicle Network Communication Error” message appeared.

I shut the vehicle off, and afterward it would not start back up.

I initially suspected the battery, so I installed a brand-new battery, but the problem remains.

Current symptoms:

• Instrument cluster: completely dead
• Ford logo: does not appear
• Fuel pump: does not prime
• Relay(s): clicking
• OBD-II port: has power
• Scan tool: powers up but has NO communication with the vehicle
• All fuses have been checked and appear good
• New battery installed with no change
• Vehicle does not start

Because the scan tool has power but cannot communicate, I’m suspecting a CAN/network, Gateway Module, BCM, PCM power/ground, or another module pulling down the network.

I’m currently planning to check CAN resistance between OBD pins 6 and 14, as well as power/grounds to the Gateway/PCM and the major network modules.

Has anyone experienced this exact issue on a 2021–2023 Bronco Sport? If so, what ended up being the cause/fix?

Looking for any known failures, TSBs, wiring diagrams, ground locations, or diagnostic procedures that could point me in the right direction.

Sounds like u are starting out doing the right things. Remember the grab a bundle of wires and wiggle test .

 

[Fordforgood]

I had an issue something like that no dash no start it would remote start. found no comms with ecu. i unplugged ecu and reseated plugs issue hasn't returned

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