abs problems 2

[free]

so i eventually was able to pull up a code for the abs(abs giving erratic problems....abs light would come on sometimes and then again would be off....when light is on abs dont work ,just normal brakes)

the code was..... 52.... Solenoid valve, RH rear inlet...
what the hell does this mean .....is it the abs unit itself giving problems
car is a b15 with accelerator cable.....any help will be thankful......
listed below is the codes list......


NISSAN ALMERA('95 onwards) & PRIMERA('96 onwards) fault codes for abs......

Fault code
Fault location
12 At start of the sequence (Primera). No fault is found (Almera)
18 The rotor of the sensor
21 Open circuit in front right hand wheel speed sensor.
22 Short circuit in front right hand wheel speed sensor.
25 Open circuit in front left hand wheel speed sensor.
26 Short circuit in front left hand wheel speed sensor.
31 Open circuit in rear right hand wheel speed sensor.
32 Short circuit in rear right hand wheel speed sensor.
35 Open circuit in rear left hand wheel speed sensor.
36 Short circuit in rear left hand wheel speed sensor.
41 Front right hand outlet of solenoid valve.
42 Front right hand inlet of solenoid valve.
45 Front left hand outlet of solenoid valve.
46 Front left hand inlet of solenoid valve.
51 Rear right hand outlet of solenoid valve.
52 Rear right hand inlet of solenoid valve.
55 Rear left hand outlet of solenoid valve.
56 Rear left hand inlet of solenoid valve.
57 Low supply voltage.
61 The hydraulic pump or relay.
63 The system relay.
71 The ECU (Electronic control unit)