1999 Volvo V70

Tiny
PONJA
  • MEMBER
  • 1999 VOLVO V70
Engine Mechanical problem
1999 Volvo V70 Four Wheel Drive Automatic 140000 miles

The car has a check engine light on and I was told that the code was 1550. My mechanic didn't know what it was at the moment and told me to come back. Can you help?
Thank You
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Thursday, November 26th, 2009 AT 11:27 PM

5 Replies

Tiny
KHLOW2008
  • EXPERT
Hi ponja,

He are the description of the problem.

P1550, P1551, P1633/ECM -510F: VEHICLE SPEED SIGNAL

Fault Conditions

ECM- 510F is stored when an error message is sent to ECM if a fault in vehicle speed signal has been detected in ABS control module.
(DTC ECM- 510F (no signal) is stored if there is no communication between the ABS/brake control module (BCM) and the ECM or if the communication is distorted. An error message is sent to the ECM and DTC ECM- 510F (signal too high/too low) is stored in the engine control module (ECM). DTCs for the Vehicle Speed Sensor (VSS) signal are stored in the ABS/brake control module (BCM).

No substitute value is used. Misfire diagnostics is switched off while ECM- 510F is set.

MIL is illuminated while ECM- 510F is set.

Possible Causes (Signal High Or Signal Low)

Vehicle speed sensor signal from ABS control module is faulty or missing. Defective vehicle speed signal to the ABS /brake control module (BCM). A DTC is stored in the ABS /brake control module (BCM).

Possible Causes (Signal Missing)

" Contact resistance in the Controller area network (CAN) terminals
" Open circuit in one or both CAN cables
" One or both signal cables short-circuited to ground, voltage or each other
" Defective ABS /brake control module (BCM)
" Defective engine control module (ECM)

Diagnostic Procedure

For wheel speed (vehicle speed) sensor diagnosis, see appropriate ANTI-LOCK, WITHOUT TRACTION CONTROL article in BRAKES.
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Friday, November 27th, 2009 AT 2:55 AM
Tiny
PONJA
  • MEMBER
Thank you very much.
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Saturday, November 28th, 2009 AT 10:31 PM
Tiny
KHLOW2008
  • EXPERT
You are welcomed and glad to be of help.
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Sunday, November 29th, 2009 AT 2:29 AM
Tiny
PONJA
  • MEMBER
It's me again. I did not have much luck with the repair shop:(
Until I find someone who can take care of this problem can you please let me know what are the possible repair option. Thank you.
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Sunday, December 6th, 2009 AT 12:12 AM
Tiny
KHLOW2008
  • EXPERT
I checked through the database and some other shops had encountered the problem which seems to have occurred previous.

The problem stems from a broken soldered joint in the ABS/TRAC module in the wheel speeed sensor partition of the board.

Remans are available at a reasonable charge.
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Sunday, December 6th, 2009 AT 4:34 AM

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