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U0073 code comes up on 2003 volvo xc90 AWD along w/ P0071 ,n P0420

Dashboar does not lit check engine is on ,it was running good and then the last time I wanted to start it , it did then turn off by itself and then no start at all .It crancs and that's it.

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6 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

SOURCE: How to replace timing belt for volvo xc90 2.5 turbo?

Bring to dealer

Posted on Aug 14, 2008

CivicSI990
  • 41 Answers

SOURCE: Check Engine Light with Code P0072 on 2004 Volvo XC90

Grounding issue "Circuit low" = ground wire problem or another system on the same circuit using too much current.

Check all wiring issues and then correct the issue to have the code go away :)

Posted on Apr 03, 2009

RamTek
  • 377 Answers

SOURCE: 2003 Volvo S60 AWD warning brake failure light

Check the fuse and the wirings.

Posted on Jun 09, 2009

morse008
  • 1111 Answers

SOURCE: P0420 code

This means that the secondary O2 sensor detects that the catalytic converter isn't working as efficiently as it should.
This engine code can be triggered by any one of the following:

1.) The catalyst in the catalytic converter is cracked, clogged, or otherwise damaged.
2.) The secondary O2 sensor is malfunctioning.
3.) There is an exhaust leak.
4.) The computer unit is faulty.

Posted on Aug 24, 2009

ashline02
  • 66 Answers

SOURCE: Volvo xc90 daytime running lights

I'm not sure about your model, but some Volvos come with a little screwdriver hole adjacent to the headlight switch that you can turn to shut the DRL off. I believe the slot needs to be horizontal to be in the off position.

Good luck!!

Posted on Jun 17, 2010

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1 Answer

2005 volvo xc90 will not stay running, it is giving a code of U0073 generic control module communication bus"a" off. .we have put in new crank sensor. the maf sensor is not the problem


Do you know what a serial data communication network is ? All the control modules on your vehicle share info on it . It stead of hard wiring all the componets on the vehicle they use control modules and a data network . U codes are problem codes assoicated with these networks . U0073 generic control module communication bus"a"OFF Has nothing to do with engine sensors ! Condition
The control modules transmit and receive information via a standardized serial communication method - CAN (Control Area Network).
The diagnostic trouble code (DTC) is stored if the control module detects that:
  • The control module does not have contact with the controller area network (CAN).
  • Incorrect value runs longer than 10 seconds.
The control module's test for the diagnostic trouble code (DTC) starts in the event of:
  • Starting the control module's CAN communication.
Note!The control module can only detect the fault once the test has been started and the diagnostic trouble code (DTC) is stored when the conditions are met. In the event of system communication problems, it is not possible to communicate with the control module. Therefore it will only be possible to read off the fault if it is intermittent. Substitute value
  • None.
Possible source
  • Open-circuit in terminals.
  • Damaged Parking Assistance Module (PAM).
Fault symptom[s]
  • Parking Assistance System, malfunction
  • Information lamp is on
  • Message in information display

A shorted module will cause the data bus to short and cause no start condition . You best bet , take it to a qualified repair shop . How to Diagnose Controller Area Network CAN

Jan 06, 2017 | 2005 Volvo XC90

1 Answer

I own a 2003 Volvo xc90 awd when I give it gas I hear a knocking noise on right side of car towards the back it's a 2003 Volvo xc90 t6 awd is this dangerous can I still drive the car


Could be a catastrophic failure in the mist, especially if the front side of your driveshaft falls while cruising down the road and then your car pole-vaults itself like an olympian. There are remote audio+video systems that you can install under the car to use as an extra set of eyes and ears to help pinpoint the problem. But, yes--get it looked at quickly.

Nov 30, 2015 | Volvo Cars & Trucks

1 Answer

U0073 code come up on volvo xc90 2004 and car wont start. Also have check stop lamp message but all brake lights work perfect.


Look at the abs module it is a brake module others with your issue have had same problem :-) Hope this helps

Nov 17, 2015 | Volvo Cars & Trucks

1 Answer

How do I fix the knocking noise from the rear of my truck?


You just have to let the mechanics do the job, this is not something you can resolve without specialist knowledge. What you can do is check around for recommendations.Look around for somebody with a good reputation in driveline work/ diffs propshafts .....who dows not charge the earth.
A reputable company will save you money in the long run

GOOD LUCK

Apr 06, 2015 | 2003 Volvo XC90

1 Answer

Volvo xc90, warning comes up ''engine service required'' then loss of power until warning goes off.


Hi.

The loss of power can be caused by a big number of different fault. A code reading would be a good first step to troubleshoot the fault.

If the check engine light comes on, then engine faults have been detected and related codes have been stored in the vehicle's computer modules. Primary DTC (trouble codes) are stored in the main computer (called ECU). Such codes can be read using an OBDII code reader connected to the socket under the dash. Here a code reader: U480 Can Bus.

A code scanning can also be performed at the dealer place or at any garage. In US it can be done for free at the nearest Autozone.

If there is no indicative codes also test the fuel pump and pressure regulator by reading fuel pressure with a gauge connected to the port on the fuel rail. Here the tool: Wilmar W80594.

Regards.

Ginko

Oct 22, 2011 | 2003 Volvo XC90

1 Answer

How do you jump start the volvo xc90?


You open the hood and connect the cables to the positive jump terminal and the negative cable to ground, a soild metal object in engine compartment.good day

Aug 06, 2011 | 2007 Volvo XC90 V8 AWD Sport

1 Answer

2007 Volvo XC90 fault codes-ECM P030000, P030100, P030300, P0304000, what do they mean?


first code means random/multiple misfire cylinder (s) detected
second code means misfire detected number 1 cylinder, third code, miss=fire number 3 cylinder fourth code misfire number 4 cylinder
causes can be spark plugs, HT leads, ignition coils, injector, wiring fault, low compression/ engine mechanical fault

Jun 04, 2010 | 2007 Volvo XC90 V8 AWD Sport

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