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No Bus 2003 Dodge Dakota Sport 5.7 L

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Old 06-28-2019, 10:26 PM
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Default No Bus 2003 Dodge Dakota Sport 5.7 L

No Bus. Truck drives but Gauges turn on and off, compass and temp blink on and off. We replaced the PCM and disconnected negative wire for hard reset, cleared the no bus code but it still comes on. Any idea is on what to do next please!?! M
 
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Old 06-29-2019, 10:23 AM
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Welcome to DF.

No Bus means the cluster isn't communicating with the PCM. There are a LOT of possible causes for it...... Start by disconnecting rear O2 sensor, and see if the problem goes away.
 
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Old 06-29-2019, 12:22 PM
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does the N0Bu5 stay on even when the cluster is working? Or does it go in and out with the cluster?
 
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Old 06-30-2019, 08:11 PM
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Originally Posted by magnethead
does the N0Bu5 stay on even when the cluster is working? Or does it go in and out with the cluster?

The no bus code where the odometer stays on but then shuts off and reads the mileage once I'm driving for like 10 minutes it will kick back on (a/c, gauges, compass, thermometer, etc). It flickers on and off
 

Last edited by Kathleen Lyons; 06-30-2019 at 08:17 PM.
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Old 06-30-2019, 08:12 PM
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Originally Posted by HeyYou
Welcome to DF.

No Bus means the cluster isn't communicating with the PCM. There are a LOT of possible causes for it...... Start by disconnecting rear O2 sensor, and see if the problem goes away.

Sounds good I will give it a shot! Do I keep it disconnected or just unplug for a little?
 
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Old 07-01-2019, 07:35 AM
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Leave it disconnected, and see if your problem stays gone.

Given your symptoms though, I would more suspect a bad connection somewhere.
 
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