Question about 1999 Dodge Durango

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I have a 1999 Dodge Durango 5.9 Engine and lately it shuts down while I am still driving. I have read several blogs online by other people who own these vehicles and have had the same problem (engine stalls, reads "no bus" on the odometer, gauges don't work, all lights turn on on the instrument panel), from reading these blogs, it seems that the main issue is the engine computer overheats and makes the car shut down, after about 10-15 minutes it will turn back on and works as if nothing happened. The thing is I am scared to go on the highway because it just turns off suddenly without warning and I'm afraid of getting into a collision. Since we are not sure if replacing the computer will solve the problem, (since it hasn't for some), can I just purchase a used computer, not rebuilt but used, and install it on my Durango or does it have to be programmed specifically for my car and if so, where can I do that.

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  • Dodge Master
  • 11,465 Answers

Have you check for DTC'S - diagnostic trouble codes ?
Hi. There is a good chance the pcm is causing this , if especially if the vehicle won't start. There are a few other things that will do it too, a sensor or wiring problem can take the pcm down. We can run through a few things if you have a voltmeter to make sure its the pcm if you want. Checking PCM reference voltage at a sensor that's easy to get to , like the TPS . - throttle position sensor . It's a three wire sensor , one wire is a signal to the pcm , ones is a ground supplied from the PCM an the last is a voltage supplie from the pcm , called a reference voltage . could be 5 , 7 or 12 volts it's a steady voltage not like charging voltage .
How to check the 5v reference circuit for short to ground Cadillac Testing ECM Input Sensors with Volt Ohm Meter

Posted on Mar 11, 2017

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Posted on Jan 02, 2017

  • 1 Answer

SOURCE: 1999 dodge durango 5.9 cranks but wont start no

It is your computer. I had this recently as well. No Bus means no connection to the on board computer. There is a company in Florida that repairs these computers, so don't get suckered in by the dealership for 750-1000.

Posted on Mar 25, 2009

  • 323 Answers

SOURCE: No Bus Error

All the modules are connected together to communicate with each other via the PCI bus. It is possible that one of the modules is pulling the bus down.Since the vehicle won't start it could be any one of the modules. It will be a process of elimination to find the faulty one by disconnecting them one at a time. Here are a few, powertrain control module (the one you replaced) Instrument cluster, overhead console, anti-lock brakes, airbag. Since the cluster unplugged wont read anymore, just try to start the vehicle to see if that was the one. Otherwise see if the odometer message of "no bus" goes away after each one is unplugged.

Posted on Apr 24, 2009

blueextc3221
  • 15935 Answers

SOURCE: need to know "no bus" indicator light on instrument panel....

"No Bus" means the data cable going to the (PCM) computer is unplugged, or the PCM has failed and not able to read the information it is being given.
Sometimes just jiggling the PCM causes the ODO "NO BUS" to come on.
Sometimes a bad crank or cam sensor can cause this as well.

Here is the OFFICIAL checklist for the "NO BUS" condition....

Vehicle: 1998 - 1999 Dodge Durango 3.9L
2000 - 2001 Dodge Durango 4.7L
1998 - 2000 Dodge Durango 5.2L
1998 - 2001 Dodge Durango 5.9L



Symptom: Engine will not start. Gauges are inoperative. No BUS message displayed on odometer.



System: Body/Chassis Electrical, Emissions/PCM/Fuel, Engine Electrical



Codes: N/A



Problem 1 of 6: The 5v power supply from the Powertrain Control Module (PCM) is shorted due to a shorted Crankshaft Position (CKP) Sensor.



Test & Fix: If the 5v power supply circuit is shorted to ground, the CCD bus is unable to transmit messages and the Powertrain Control Module (PCM) appears to be "dead". The PCM is not damaged when the 5v power supply gets shorted to ground, but does need to be reset by turning the key off for 10 second after the short is removed. Using a DVOM or labscope, measure the voltage on the 5v reference wire at the Throttle Position Sensor (TPS) or Manifold Absolute Pressure (MAP) sensor. If 5v is not present, unplug the Crankshaft Position (CKP) Sensor. Turn the key off for 10 seconds. Turn the key on and measure the voltage on the 5v power supply circuit. If the voltage is now 5v, replace the CKP sensor.



Problem 2 of 6: The 5v power supply from the Powertrain Control Module (PCM) is shorted due to a shorted Camshaft Position (CMP) Sensor.



Test & Fix: If the 5v power supply circuit is shorted to ground, the CCD bus is unable to transmit messages and the Powertrain Control Module (PCM) appears to be "dead". The PCM is not damaged when the 5v power supply gets shorted to ground, but does need to be reset by turning the key off for 10 second after the short is removed. Using a DVOM or labscope, measure the voltage on the 5v reference wire at the Throttle Position Sensor (TPS) or Manifold Absolute Pressure (MAP) Sensor. If 5v is not present, unplug the Camshaft Position (CMP) Sensor. Turn the key off for 10 seconds. Turn the key on and measure the voltage on the 5v power supply circuit. If the voltage is now 5v, replace the CMP sensor.



Problem 3 of 6: The 5v power supply from the Powertrain Control Module (PCM) is shorted due to a shorted Manifold Absolute Pressure (MAP) Sensor.



Test & Fix: If the 5v power supply circuit is shorted to ground, the CCD bus is unable to transmit messages and the Powertrain Control Module (PCM) appears to be "dead". The PCM is not damaged when the 5v power supply gets shorted to ground, but does need to be reset by turning the key off for 10 second after the short is removed. Using a DVOM or labscope, measure the voltage on the 5v reference wire (5v power supply) at the Throttle Position Sensor (TPS) or Manifold Absolute Pressure (MAP) Sensor. If 5v is not present, unplug the MAP sensor. Turn the key off for 10 seconds. Turn the key on and measure the voltage on the 5v power supply circuit. If the voltage is now 5v, replace the MAP sensor.



Problem 4 of 6: The 5v power supply from the Powertrain Control Module (PCM) is shorted due to a shorted Throttle Position Sensor (TPS).



Test & Fix: If the 5v power supply circuit is shorted to ground, the CCD bus is unable to transmit messages and the Powertrain Control Module (PCM) appears to be "dead". The PCM is not damaged when the 5v power supply gets shorted to ground, but does need to be reset by turning the key off for 10 second after the short is removed. Using a DVOM or labscope, measure the voltage on the 5v reference wire (5 volt power supply) at the Throttle Position Sensor (TPS) or Manifold Absolute Pressure (MAP) Sensor. If 5v is not present, unplug the TPS. Turn the key off for 10 seconds. Turn the key on and measure the voltage on the 5v power supply circuit. If the voltage is now 5v, replace the TPS.



Problem 5 of 6: The 5v power supply from the Powertrain Control Module (PCM) is shorted due to a shorted wire.



Test & Fix: If the 5v power supply circuit is shorted to ground, the CCD bus is unable to transmit messages and the Powertrain Control Module (PCM) appears to be "dead". The PCM is not damaged when the 5v power supply gets shorted to ground, but does need to be reset by turning the key off for 10 second after the short is removed. Using a DVOM or labscope, measure the voltage on the 5v reference wire at the throttle position sensor (TPS) or manifold absolute pressure (MAP) sensor. If 5v is not present, unplug all sensors that are connected to the 5v power supply and disconnect the PCM. Check if either 5v power supply circuit is shorted to ground using a DVOM. If the circuit is found to be shorted to ground, repair the wire and the cause of the short.



Problem 6 of 6: The 5v power supply from the Powertrain Control Module (PCM) is shorted due to a shorted Governor Pressure Sensor.



Test & Fix: If the 5v power supply circuit is shorted to ground, the CCD bus is unable to transmit messages and the Powertrain Control Module (PCM) appears to be "dead". The PCM is not damaged when the 5v power supply gets shorted to ground, but does need to be reset by turning the key off for 10 second after the short is removed. Using a DVOM or labscope, measure the voltage on the 5v reference wire at the Throttle Position Sensor (TPS) or Manifold Absolute Pressure (MAP) Sensor. If 5v is not present, unplug the large round connector on the driver's side of the transmission. Turn the key off for 10 seconds. Turn the key on and measure the voltage on the 5v power supply circuit. If the voltage is now 5v, remove the transmission pan and check for shorted wiring inside the transmission. If the wiring is OK, replace the Governor Pressure Sensor.


Many times the PCM simply overheats - and changing it will stop the problem.


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Posted on May 13, 2009

  • 10 Answers

SOURCE: service code no bus

I also had same problem and replaced the throttle position sensor.

Posted on Jun 04, 2009

  • 1 Answer

SOURCE: 1999 Dodge Ram shuts off while driving, Odometer reads No Bus

I have the same problem and my truck's A/C doesn't work.

Posted on Jul 31, 2009

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1999 dodge durango 5.9 cranks but wont start no fire to coil,auto shut relay buzzes,has no BUS code on odometer,


It is your computer. I had this recently as well. No Bus means no connection to the on board computer. There is a company in Florida that repairs these computers, so don't get suckered in by the dealership for 750-1000.

Mar 24, 2009 | 1999 Dodge Durango

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