ABS Sensor faults

[Jamie92345]

Hi,

I have the following faults on my Volvo V40 2013.

C004764 Brake booster pressure sensor, Algorithm based faults, Signal plausibility fault

C003711 Left rear Wheel Speed Sensor, General electrical faults, Circuit short to ground

C003707 Left rear Wheel Speed Sensor, General fault information, Mechanical faults

C00374A Left rear Wheel Speed Sensor, System internal faults, Incorrect component installed

C003415 Right front Wheel Speed Sensor, General electrical faults, Circuit open/short to battery.

I have had the ABS/DSTC service required come up on the dashboard, and also the City Safety service required message.

Its strange that the front right and rear left have issues, theres only 1 fault message for the front right, I have changed the front right and left wheel speed sensors before I even tried getting these fault codes up.

Can anyone shine any light on what might be going on? I could go ahead and change the rear left sensor, but why would the front right also have an issue?

Thanks.

[Jamie92345]

Okay, for anyone else who might end up with the same codes, I did a continuity test and an ohm test on the left rear sensor and there was no ohm reading, the new part had an ohm reading, I tested the wiring and got 12 Volts from the plug, swapped the new part in and the ABS light has gone off. I unplugged and cleaned up the one on the front right with a bit of contact cleaner and a can of compressed air and replugged it in, its possible I didn't plug it in correctly in the first place, but the light has gone off so...

I still have a problem with City Safety service required message showing. I just checked my printout of my error codeds and there is also a CEM code that says:

B11D453 Low speed collision mitigation by braking disabled, System programming faults, deactivated.

I also happen to have 'Rear door driver side and Front passenger side central locking motor, mechanical faults, command position unreachable. But I don't think these should affect the City safety problem.