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What does 4-1-2 code mean for volvo-460 1995, manual transmission, and 1.8 engine, when read from the diagnostic socket,

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Secondary air injection system valve a malfuntion (code 412)

Posted on Feb 07, 2009

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1999. What are the probable causes of DTC P1624?


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The Engine and Automatic Transmission (not applicable to manual transmissions) in this vehicles drive train are fully electronically controlled by a computer called the PCM and TCM (Power Train Control Module, Transmission Control Module). When a problem like this or other drive-ability related problems occurs the computer stores a record of the problem (there are of course some exceptions to this, like the fuel pump, engine coolant temperature sensor and MAF sensor for instance) in the form of a fault code in its memory, to read these fault codes you must have the systems memory scanned with a special tool. Once the fault code(s) are read you then must perform the appropriate diagnostic testing to find and resolve the problem(s) DO NOT REPLACE ANY PARTS UNTIL A TRAINED TECHNICAIN HAS DIAGNOSED THE PROBLEM TO AVOID SPENDING YOUR HARD EARNED MONEY ON PARTS THAT MAY NOT CORRECT THE PROBLEM. Also always check fuel pressure for correct spec for your make and engine type.


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1 Answer

Check engine light for volvo 850 wont go off wat else can be the problem if i got a full tune up and put in new spark plugs plus it trembles alot and it shakes when i start it up plus wen i put it on...


Hi, I recommend you access the OBD panel to extract the trouble codes. Then send us the trouble codes for further advice. On 850 models the DLC is located in the engine compartment in front of the module box, behind the passenger side headlamp.

  1. Open diagnostic socket cover and install selector cable into socket No. 2 for fuel injection codes or socket No. 6 (except Motronic systems) for ignition codes.
  2. Turn the ignition switch to the ON position.
  3. Enter control system 1 by pressing the button once. Hold the button for at least 1 second, but not more than 3.
  4. Watch the diode light and count the number of flashes in the 3 flash series indicating a fault code. The flash series are separated by 3 second intervals. Note fault codes.

1f there are no fault codes in the diagnostic unit, the diode will flash 1-1-1 and the fuel system is operating correctly.
  1. If diode light does not flash when button is pressed, or no code is flashed there is a problem with the soft-diagnostic system, proceed as follows:
    1. Check ground connections on the intake manifold, and the ground connection for the Lambda-sond at the right front mudguard.
    2. Check the fuses for the pump relay and the primary pump. On 240 models, fuses are located inside the engine compartment on the left side wheel well housing. On 760/780 models, fuses are located in the center console, just below the radio. On 740/940 models, fuses are located behind the ashtray. Access can be gained by removing the ashtray, and pressing upward on the tab marked electrical fuses press. On 850 models, the fuses are located on the left side of the engine compartment behind the strut mount plate. The fuses on 960 models are located on the far left side of the dashboard. The driver's door must be open to gain access to the fuses.
    3. Remove glove compartment, and check control unit ground connections.
    4. Turn the ignition switch to the OFF position. Remove control unit connector and connector protective sleeve.
    5. Check diagnostic socket by connecting a voltmeter between ground and No. 4 connection on the control unit connector. Reading should be 12 volts. If no voltage is present, check lead between control unit connector and fuse No. 1 in the fuse/relay box.
    6. Turn the ignition to the ON position, and install selector cable into the No. 2 socket on the diagnostic socket. Connect a voltmeter between ground and No. 12 connection on the control unit connector. Reading should be 12 volts. Press the button on diagnostic socket and note reading. Reading on the voltmeter should be 0 volts. If no voltage at the control unit is present, take reading at the diagnostic socket connector. If reading remains at 12 volts when button is pressed, check diagnostic socket.
    7. Connect a voltmeter between ground and the red/black lead on the diagnostic socket connector. Reading should be 12 volts.
    8. Connect a suitable ohmmeter between ground and the brown/black lead in the diagnostic socket connector. Reading should be 0 ohms.
    9. Turn the ignition to the OFF position. Connect ohmmeter between diagnostic socket selector cable and the pin under selector button. The ohmmeter should read infinity. Press the button and note the reading. The reading should be 0 ohms.
    10. Connect a suitable diode/multimeter tester, or equivalent, between the diagnostic socket diode light and the selector cable. Connect red test pin from the tester to pin under diode light and black test pin from tester to selector cable. A reading on the tester indicates correct diode light function. With no reading on tester, replace diagnostic socket.
    11. Check the system relay/primary relay by connecting a voltmeter between ground and the No. 9 connection on the control unit connector, then connect a jumper wire between ground and No. 21 connection on the control unit connector. The relay should activate and the reading should be 12 volts.

  2. Press the diagnostic socket button. Note any additional fault codes.

The diagnostic system memory is full when it contains 3 fault codes. Until those codes are corrected and the memory erased, the system cannot give information on any other problems.
  1. Press the diagnostic socket button for the third time to see if a third fault code is stored in the memory. If the diode light flashes the same code 1-1-1, there are no other codes in the memory.

jturcotte_2373.gif

Fig. Fig. 1: Push button once for mode 1
Push button twice for mode 2


Push button three times for mode 3




jturcotte_2375.gifjturcotte_2374.gif


To clear the codes:

  1. Turn the ignition switch to the ON position.
  2. Read fault codes.
  3. Press diagnostic socket button 1 time and hold for approximately 5 seconds. Release button. After 3 seconds the diode light should light up. While the light is still lit, press the button again and hold for approximately 5 seconds. After releasing the button, the diode light should go off.
  4. To ensure that the memory is erased, press the button 1 time, for 1 second but not more than 3 seconds. The diode light should flash code 1-1-1.
  5. Start and run engine. If engine will not start, correct the problem before proceeding and start over with Step 1.
  6. Check to see if new fault codes have been stored in the memory by pressing the diagnostic socket button 1 time, for 1 second but not more than 3 seconds.
  7. If fault code 1-1-1 flashes, it indicates that there are no additional fault codes stored in its memory.

Oct 05, 2011 | 1994 Volvo 850

2 Answers

Volvo v70 abs light and mil light on. no coms with diagnostic socket, all fuses are ok. no 12v at diag socket, so no diag tools will work.


Are you plugging into the obd2 diagnostics port under the dash or the diagnostics port under the hood? You should be plugged in under the dash to read codes for the MIL / ABS light. Just a heads up as well most scanners you can buy from the part stores do not have the necessary program protocols to read European cars.

Jan 17, 2011 | 2007 Volvo V70

1 Answer

I dont know how to pull the codes on a 1993 volvo


Volvo Code Retrieval Accessing Trouble Codes 89-93 models (and later non-turbo/non-OBDII models)

Fuel Codes Locate the diagnostic unit behind left strut tower and remove its cover.(see image) Connect selector cable to socket #2,which tests the fuel codes. Turn the ignition switch to the ON position(engine not running). Enter the diagnostic mode by pressing the push button on the diagnostic unit for at least 1 second, but not more than 3 seconds. The red LED light will start to flash,count the number of flashes in 3 flash intervals. The flashes will be seperated by 3 second intervals.Make note of all codes. If no codes are stored,the LED will flash 1-1-1,which means the fuel system is operating correctly.
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Ignition Codes To access the ignition codes,follow the above procedure,but with the selector cable connected to the #6 socket on the diagnostic unit.
NOTE:Turbocharged models may have seperate codes for the turbo system and are accessse by hooking the selector cable to the #5 socket.

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Dec 28, 2009 | 1994 Volvo 940

1 Answer

I need instructions to turn off service light in 1995 850 volvo


Keep pen and paper ready, as you might have to write down error-codes as you want to do this.

Turn ignition OFF

open the lids of the diagnostic sockets situated in front of the enginecompartment (by the fillercap for the windshieldwasherfluid)

Put the socket with a short lead on in the hole marked "1" on module A

Turn ignition ON

press the pushbutton on the top for about 1 second and WAIT.
The LED will blink in a sequence that indicates if there is any problems that need to be solved.

The led will blink 1 to 5 times, have a pause, blink 1-5 times , have a pause and blink 1-5 times.
Write down the sequence as you count the blinking. eg: 1-3-1

When one sequence is finished, you press the pushbutton again, and read the next code.

Repeat this until you read the first code again.

If the first code reads 1-1-1, all is OK and you can proceed.

After this you can reset the servicelamp:

Leave the connector in socket 1 on modula A.

Turn ignition OFF

Turn ignition ON again

Press the pushbutton for 5 seconds. Be patient.
Release the pushbutton and wait about three seconds, then the LED starts to blink rapidly
press the pushbutton for 5 seconds again and release it.

Turn the ignition OFF

Remove the connector from the socket, replace the lids and put the connector back in its rest.

Turn on ignition and start engine, the service lamp should not be on.

Any error-codes? Refeer to a Volvo-dealer.

Jun 30, 2009 | 1995 Volvo 850

1 Answer

Check engine lite is on:1997 volvo 960 p0705 transmission code


Just because your Check Engine light came on doesn't mean there's something wrong at all. Various Mechanical functions are timed by the Manufacture to signify Servicing required.

Sometimes they're set at 50K miles or more, when the light starts going on, all you have to do is take it to an Authorized Service Shop and they Reset the timer. Most places won't even charge you for doing it unless they find something wrong.


Jan 26, 2009 | 1994 Volvo 960

1 Answer

What does 4-1-2 code mean for volvo-460 1995 engine


its a diagnostic code, not sure of the exact meaning though. your best bet would be to try a volvo owners club or try volvo themselves. sorry cant help you any more.

Dec 18, 2008 | 1995 Volvo 960

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