Question about 1996 Volvo 960

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It is letting you know there is an error with the audio system. Error code #4.

I don't remember what that code is exactly, but I thought those codes were for the CD Changers. Do you have one?


Posted on Nov 20, 2008

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Had radio installed now car starts but dies a sec later do it 3 times andthen wont do anything replaced ecu it starts but does the same thing dash reads no bus

What's happened, is they have used the EECU communication (can bus) wire's as the electrical feed for your radio, corrupting the system, I've seen this done in many trucks, when two ways are installed...

Remove radio, and find where it gets its power from, remove those wires see if problems go away, if they do find different location for power to the radio, preferably from the fuse panel...

Feb 12, 2016 | Cars & Trucks

1 Answer

NO BUS displayed in odometer display as well as warning lights are on. No radio,no heat & grinding tranny sounds when shifting out of drive to park. Whats wrong with my car?

A display showing NO BUS is a communication error between one or modules. All your symptoms may be related. You can try disconnecting the battery for 30 seconds to see if all resets. If not, a diagnostic from a scan tool may be required to isolate which module is not communicating and repair from there

Nov 15, 2015 | 2000 Chrysler Cirrus

2 Answers

2004. Why won't it stay running after I hardwired an aftermarket car stereo into it?

Because you can't just replace a radio with out using an interface module . The factory radio is hooked into the vehicle communication network , Class 2 serial data bus . CAN Data Tip Clip Class 2 Loop Configuration You need too know what thing's will be affected when you change thing's Takes the Bus Tip Clip Case 4 Data Bus Issues

Oct 19, 2015 | Pontiac Sunfire Cars & Trucks

1 Answer

Check engine light is on and diagnatics show the error codes, P0722 and U2108

Definition of Diagnostic Trouble Code U2108 Buick: CAN Bus Error ABS Cadillac: CAN Bus Error ABS Chevrolet: CAN Bus Error ABS GMC: CAN Bus Error ABS Oldsmobile: CAN Bus Error ABS Pontiac: CAN Bus Error ABS Saturn: CAN Bus Error ABS

Definition of Diagnostic Trouble Code P0722 Category: Powertrain Definition: Output Speed Sensor Circuit No SignalNote: This definition of P0722 is applied to all manufacturers

Jun 27, 2015 | Cars & Trucks

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How do i fix this p1687 code no mechanical instrument cluster bus message?

i guess you are working FSM free (no book) on this complex car?
the factory service manual tells you what the steps are.....
and what the codes mean, and what checks to do ....
fuses are first.
reseat modules 2nd. (related)
are those all DTC errors. or just 1. of many."?
using what scan tool. does your tool show all jeep codes.
like the Innova 3160 does.?? or is your tool 1/2 brain dead... as many are.
one code. answer.....s..
first lets try to understand this code. (DTC)
which engine? 4.0L or 4.7L?

this error , i think does not mean both key FOBS are dead
but did you try both... car came with both.????/
it means the SKIM is not talking, (check all fuses with a voltmeter.
not just gandering at them......????) key on, test.
that be first. 12vdc on both sides of fuses, means they are really good.
it can also mean the Data buss is dead. PCI buss. its called.
The factory scan tool can see this data and we can see
if the data is Dead, or garbled or is never even sent.
you cant do that.... so...... its palm hits head moment.
if you had a real scan tool , and say lots of P1, P2, or other Jeep codes about PCI buss failure, i'd suspect that PCI has problems.
but if not, then just the SKIM is dead.
there are 7 computers on that buss. even the RADIO and BCM
if the bus has issues, the BCM will throw lots of errors.
Seems to me the SKIM is bad, or both keys bad.
i dont think this error is key related. but gee, you have 2, to try...
and takes 5min work....

No Cluster Bus Messages Print this code data Trouble Code Conditions:
Key on or engine running; and the PCM determined that it did not receive any Security Key Bus Messages over the Data Bus line for 20 seconds. This malfunction may be an intermittent problem.
Possible Causes:
  • Data Bus circuit from SKIM to PCM is damaged or it is open
  • PCM unable to communicate with the Body Control Module
  • PCM has failed, or the SKIM is damaged or has failed
that is all i know on this from DIY , perspective......

May 21, 2015 | 2001 Jeep Grand Cherokee

1 Answer

My 03 dodge 3500 5.9. is showing a no bus error code on odometer the truck starts fine but gauges aernt working

The BUS is not part of the PCM/ECM it is on the body control module (BCM). It effects radio and dash most noticeably. Has no effect on powertrain.

Jan 16, 2014 | 2001 Dodge Ram 3500 Truck

1 Answer

BUS - E04 appears and the stereo wont work on car stereo which is a subaru super real focus sound system GX -99

You need to take it to a radio thec and have thenm recode it or the stereo is not for that modiel

Nov 08, 2009 | 1997 Subaru Legacy

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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