P0502 code

[Tribble]

My dads car just threw up this code.
Any ideas ? Sensor , abs ring.
car is 2002 s60 2.0T

[JamesT5]

Vehicle Speed Sensor A Circuit Low Input

[JamesT5]

I wonder if this is something to do with a DIM error i.e. 'Speed Sensor' , or whether it's something further down the line.....

[JamesT5]

Oh, just been browsing the net and found this that might help you...

"Diagnostic trouble code (DTC) ECM-510F (no signal) is stored if there is no communication between the ABS/brake control module (BCM) and the engine control module (ECM) or if the communication is distorted."

Hope that helps....

Regards

James

[M-R-P]

Won't be DIM.
Might be worth unplugging the abs ecu/pump and cleaning the contacts. Worked on mine when I had a brake code.

[valentino]

What should the contacts be cleaned with？

[stuartggray]

More than likely a faulty abs sensor, or a broken abs reluctor ring. More than likely on the front right.