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No bus 5

On my odometer i am get no bus 5 displyed what does this mean my car wont start do i need to replace the power control module

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  • Cars & Trucks Master
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Whenever this warning light or any other stays on in the dash it is indicating that the systems control module (or the system sensor in the case of lights like low oil pressure, door open indicators etc.) has detected a fault, it then disables the system (this applies to ABS,TCS, TCM, SRS and BCM faults and others) as long as the light is on. You must now have the dealer hook up a special electronic diagnostic tool and "scan" the system for the fault code that is stored for the problem(s)

Legend of Abbreviations. ABS Antilock brake system.TCS Traction control system, TCM Transmission control module, SRS Supplemental restraint system, BCM Body control module

Posted on Oct 25, 2012


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Posted on Jan 02, 2017

  • 13 Answers

SOURCE: wont start my odometer blinks

From the official Durango shop manual......(abbreviated)

Self Diagnosis Test

Vehicle key position is OFF ,or able to pull key out.
Hold in the trip odometer button (dont release yet)
Turn key to the ON position (one notch), but DON'T try to start the engine
Continue holding the trip button for about 10-12 seconds until CHEC appears in the odometer display
Release the trip button.
Series of three digit numeric failure codes may appear.
If no failure message appears, the self diagnostic test will proceed as described in step 6

Code Chart

110- cluster CPU,RAM,EEPROm failure, replace cluster

900-CCD data bus not operational, check CCD data bus connections at cluster, check the cluster fuses,check the CCD data bus bias, cehck the CCD data bus voltage, check the CCD data bus terminations.

920-cluster is not recieving a vehicle speed message from the PCM, check PCM software level and reflash if required, use the ($2500+) DRBIII scan tool to verify the vehicle speed message is being sent by the PCM

921-the cluster is not recieveing a distance pulse message from PCM,check PCM software level and reflash if required, use the ($2500+) DRBIII scan tool to verify the distance pulse message is being sent by the PCM

940-the cluster is not recieving an airbag lamp-on message from the ACM, check the CCD data bus connections at the ACM, check the ACM fuse.

950-cluster not recieving an ABS lamp-on message from the CAB, check CCD data bus connections at the ACM, check the ACM fuse.

960- clsuter not recieving a PRND21 message from the TCM, check the CCD data bus connections at the TCM, check the TCM fuse.

999-An error has been discovered, record the failure message, depress the trip odometer reset button to continue the Self-Diagnostic Test

Step 6
Instrument cluster will test each segment of the odometer (all first, then each one seperately)

Step 7
Bulb test

Step 8
Gauge test

Step 9
test completed

The instrument cluster will return to normal operation at the completion of test, if ignition switch turned off, or a vehicle speed message indicating movement recieved from the PCM on the CCD data bus.

Hope that help you or anyone else in future.

Posted on Oct 03, 2008

  • 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

  • 109 Answers

SOURCE: odometer reads no bus

check bulkhead connecter for corrosion, cluster is your body controll module, losing signal to fuel pump module , and pcm, thios is a communication issue, volt meter wil help, back probe diagnostic connecter, pin 7, white wire, to see if signal is there, GOOD LUCK RDJRP

Posted on Aug 03, 2009

  • 1619 Answers

SOURCE: car all of a sudden wont start there is no spark

Coils replaced?

Posted on Apr 17, 2010

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2 Answers

Why would my truck just shut down in the middle of driving and all the gauges just turn off?

Grounds. Check or replace the battery to body ground. Could be the ignition switch also. There is a lot to answer for this. year make and model helps.

Apr 08, 2016 | Cars & Trucks

1 Answer

What does no bus mean on the odometer

No bus means the bus is not operating properly. It means no communication between the modules inside your jeep. All modules inside the jeep (A/C control, radio, onboard computer or trip computer, body control, etc) communicate with each other by means of a wire called bus. Check that wire.

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My odometer working but not speedometer in a 06 jeep commander what can i do to fix?

that is a serious problem on any newer car,
its all electronic and FORT KNOX , tight.
The PCM runs that speedo and odemeter and are now not related
to the insides of the speedo head, like list 100 years. 1900 to now.
POWER TRAIN control MODULE, (old name ECU/ECM)
the PCM stores the miles and then sends them to the Cluster. via the comm bus. (sometimes the BCM is the middle man here)
TIPM (Total Integrated Power Module)
the PCM also knows car speed, at all times, (VSS sensor)
and sends live speed data, full time to the head.
so scan it. Not doing a scan is FAIL time. a NO WIN deal.
take a scan tool and scan it. see what errors you get.???????

Like VSS dead.? or comm bus errors?, or cluster module errors.?
or? or?

that is first.
also on the newer cars 1998+? there is self test in the FSM.
the FSM is a book , (sold at dealers) and is factory service manual
and in said manual there are the self tests. (for sure)
only how , is a question !!!
on mine.
you push buttons and key actions, then the CLUSTER does its a dance. it wags all gauges. etc.
if the speed dont wag the head is bad.

my 08 jeep, I can do this.
on older years, only the dealer scan tool DRB or? can only do that.

RTM , read the FSM or get it serviced.
there are only 2 choices, on cars now.
1 RTM or 2 get help.
You can not fix modern cars without this manual.
nor with out a scan tool. (I use Innova 3160 to cover jeeps) may have these checks.
costs $15 to look.
alldata, is a on line virtual FSM. and is the best one, lacking the real thing.

the below ONLY checks the cluster. !!!

my 08 FSM states: pg 1757
Holding the odometer/trip odometer push button depressed while turning the ignition
switch from the OFF position to the ON position will initiate the CCN self-diagnostic actuator test.
end quote.
now the full page

The instrument cluster actuator test will put the instrument cluster into its self-diagnostic mode. In this mode the
instrument cluster can perform a self-diagnostic test that will confirm that the instrument cluster circuitry, the
gauges and the indicators are capable of operating as designed. During the actuator test the instrument cluster
circuitry will position each of the gauge needles at various calibration points, illuminate each of the segments in
the Vacuum-Fluorescent Display (VFD) units, and turn all of the indicators ON and OFF again.
Successful completion of the actuator test will confirm that the instrument cluster is operational. However, there
may still be a problem with the CAN or LIN data bus, the Powertrain Control Module (PCM), the Totally
Integrated Power Module (TIPM), the Controller Antilock Brake (CAB), the All-Wheel Drive Control Module
(AWDCM), the Occupant Restraint Controller (ORC), the compass module, the Sentry Key REmote Entry
Module (SKREEM) (also known as the Wireless Control Module/WCM), or the inputs to one of these
electronic control modules. Use a diagnostic scan tool to diagnose these components. Refer to the appropriate
diagnostic information.
1. Begin the test with the ignition switch in the OFF position.
2. Depress the odometer/trip odometer switch button.
3. While still holding the odometer/trip odometer switch button depressed, turn the ignition switch to the
ON position, but do not start the engine.
4. Release the odometer/trip odometer switch button.
5. The instrument cluster will simultaneously begin to illuminate all of the operational segments in the VFD
units, and perform a bulb check of each operational LED indicator. The VFD segments and LED
indicators remain illuminated as each gauge needle is swept to several calibration points and back. If a
VFD segment or an LED indicator fails to illuminate, or if a gauge needle fails to sweep through the
calibration points and back during this test, the instrument cluster must be replaced.
6. The actuator test is now completed. The instrument cluster will automatically exit the self-diagnostic
mode and return to normal operation at the completion of the test. The actuator test will be aborted if the
ignition switch is turned to the OFF position, or if an electronic vehicle speed message indicating that the
vehicle is moving is received over the CAN data bus during the test.
7. Go back to step 1 to repeat the test, if necessary.

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Chevy cobalt 2010 scan code po641 reduce engine power

Possible causes
- Faulty Engine Control Module (ECM)
- ECM harness is open or shorted
- ECM circuit poor electrical connection
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help.jpg What does this mean? When is the code detected?
The Engine Control Module (ECM) has detected the sensor 5 volt reference circuit voltage is higher or lower than expected
Possible symptoms
- Engine Light ON (or Service Engine Soon Warning Light)
P0641 Chevrolet Description
The control module has 2 internal 5-volt reference buses called "5-volt reference 1" and"5-volt reference 2". Each reference bus provided 5-volt reference circuit for more than one sensor. Therefore, a fault condition on one 5-volt reference circuit will affect the other 5-volt reference circuits connected to the reference bus. The control module monitors the voltage on the 5-volt reference buses.

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1 Answer

Dodge journey no bus

Vehicles with more then one module , PCM - engine control module , BCM - body control module , EBCM -anti lock brakes , SRS - air bag module etc... all communicate on a serial data communication network .
"NO BUS" means that the communication system between the computers has stopped. How to Diagnose Controller Area Network CAN If the shop can't find a problem your not going to , very complex . There have scan tools and lab scopes to test .

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I have an 04 dodge ram 1500 and my digital odometer reads no bus what does that mean

What this means is that the dash has lost it BUS type communication with one or more of the other control modules [computers] To diagnose this you would need a scan tool that can communicate with the various control modules to see if there are any service codes or modules that have quit talking to other modules for some reason. Best bet on this one might be a trip to the dealer or a very good repair shop.

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1 Answer

2001 jeep cherokee '' no bus '' when wet

"no bus" means the communication line (wire) between the modules is down. It could be shorted to ground or power externally or a module itself is pulling it down. The engine, transmission, antilock brake, airbag, instrument cluster, and overhead console modules all use the same bus line to relay information to each other. One way to isolate the faulty module is to disconnect each module one by one with the key on until the "no bus" goes away and the odometer comes back to normal. This isn't an easy fault to find since the PCI bus line runs everywhere but I would start with isolating modules. I hope this helps.

Oct 17, 2009 | 2001 Jeep Cherokee

1 Answer

Odometer has warning code what is it no bus5

The bus is the communication interface between the many modules or computers on your vehicle. The engine and transmission modules need to be able to communicate with the cluster as well as the airbag, antilock brakes, and body control module to turn certain lights on and make gauges function. "No bus" means the communication line is either open or shorted and the cluster can't determine the inputs from the other modules. Any given module on the vehicle can pull the bus down as well as wiring. It is most likely a module causing the problem. One way to find the culprit is to disconnect each module with the key on until the odometer comes back to life. If it starts and runs, drives and shifts normal, I would do the engine and transmission last. I would start with the ABS and overhead console (if it has one). I hope this helps.

Oct 04, 2009 | 2004 Chrysler Sebring

1 Answer

Odometer reads no bus

check bulkhead connecter for corrosion, cluster is your body controll module, losing signal to fuel pump module , and pcm, thios is a communication issue, volt meter wil help, back probe diagnostic connecter, pin 7, white wire, to see if signal is there, GOOD LUCK RDJRP

Jul 16, 2009 | 1999 Dodge Ram

2 Answers

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.

Apr 23, 2009 | 1999 Dodge Durango

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