C0050 Right Rear Wheel Speed Sensor Circuit - Not Plausible
Discussion
So how does the right signal compare to the left ?
Could be a simple sensor fault, trigger fault, shouldn't be that difficult really.
And obviously it wont register a fault until the vehicle is moving....as there will be no speed signal when stationary.
And not sure what you're meaning by in second gear and idling ? Like sitting still and idling or something ? Speed signals should read nothing
Could be a simple sensor fault, trigger fault, shouldn't be that difficult really.
And obviously it wont register a fault until the vehicle is moving....as there will be no speed signal when stationary.
And not sure what you're meaning by in second gear and idling ? Like sitting still and idling or something ? Speed signals should read nothing
When ignition is switched on.......
If there was an open circuit in the sensor or its wiring the ABS self test would fail and the ABS light would remain on
The difficult thing to prove is whether the wiring is going open circuit while on the move or there is a sensor signal failure
Being a gambler I'd put money on a signal failure
A faulty sensor could be the cause of signal failure, sensors do tend to be intermittent at times
If there was an open circuit in the sensor or its wiring the ABS self test would fail and the ABS light would remain on
The difficult thing to prove is whether the wiring is going open circuit while on the move or there is a sensor signal failure
Being a gambler I'd put money on a signal failure
A faulty sensor could be the cause of signal failure, sensors do tend to be intermittent at times
stevieturbo said:
So how does the right signal compare to the left ?
Could be a simple sensor fault, trigger fault, shouldn't be that difficult really.
And obviously it wont register a fault until the vehicle is moving....as there will be no speed signal when stationary.
And not sure what you're meaning by in second gear and idling ? Like sitting still and idling or something ? Speed signals should read nothing
Sorry, I was assuming people would be able to work it out from the graph. Could be a simple sensor fault, trigger fault, shouldn't be that difficult really.
And obviously it wont register a fault until the vehicle is moving....as there will be no speed signal when stationary.
And not sure what you're meaning by in second gear and idling ? Like sitting still and idling or something ? Speed signals should read nothing
Red - Front Nearside
Yellow - Front Offside
Cyan - Rear Nearside
Green - Rear Offside
All 4 sensors report pretty much the same speed (Kmh) except for the occasional dips in the green (rear right) sensor. They're all on the same line on the chart, it's just they're all hidden by the green sensor.
Again, to clarify, second gear and idling means just that. Clutch out in second gear, at idle. Just above walking speed. I was in a private car park so it was the only way to keep a perfectly steady speed without being fast enough to use the cruise control.
Polly Grigora said:
When ignition is switched on.......
If there was an open circuit in the sensor or its wiring the ABS self test would fail and the ABS light would remain on
The difficult thing to prove is whether the wiring is going open circuit while on the move or there is a sensor signal failure
Being a gambler I'd put money on a signal failure
A faulty sensor could be the cause of signal failure, sensors do tend to be intermittent at times
Yeah there's no open circuit, and honestly I don't believe it's the sensor going open circuit as I feel like that would drop the voltage (and therefore speed) entirely to the bottom of the chart. Again though, I have replaced the sensor in question and the fault is still there. If there was an open circuit in the sensor or its wiring the ABS self test would fail and the ABS light would remain on
The difficult thing to prove is whether the wiring is going open circuit while on the move or there is a sensor signal failure
Being a gambler I'd put money on a signal failure
A faulty sensor could be the cause of signal failure, sensors do tend to be intermittent at times
OllieJolly said:
stevieturbo said:
So how does the right signal compare to the left ?
Could be a simple sensor fault, trigger fault, shouldn't be that difficult really.
And obviously it wont register a fault until the vehicle is moving....as there will be no speed signal when stationary.
And not sure what you're meaning by in second gear and idling ? Like sitting still and idling or something ? Speed signals should read nothing
Sorry, I was assuming people would be able to work it out from the graph. Could be a simple sensor fault, trigger fault, shouldn't be that difficult really.
And obviously it wont register a fault until the vehicle is moving....as there will be no speed signal when stationary.
And not sure what you're meaning by in second gear and idling ? Like sitting still and idling or something ? Speed signals should read nothing
Red - Front Nearside
Yellow - Front Offside
Cyan - Rear Nearside
Green - Rear Offside
All 4 sensors report pretty much the same speed (Kmh) except for the occasional dips in the green (rear right) sensor. They're all on the same line on the chart, it's just they're all hidden by the green sensor.
Again, to clarify, second gear and idling means just that. Clutch out in second gear, at idle. Just above walking speed. I was in a private car park so it was the only way to keep a perfectly steady speed without being fast enough to use the cruise control.
Polly Grigora said:
When ignition is switched on.......
If there was an open circuit in the sensor or its wiring the ABS self test would fail and the ABS light would remain on
The difficult thing to prove is whether the wiring is going open circuit while on the move or there is a sensor signal failure
Being a gambler I'd put money on a signal failure
A faulty sensor could be the cause of signal failure, sensors do tend to be intermittent at times
Yeah there's no open circuit, and honestly I don't believe it's the sensor going open circuit as I feel like that would drop the voltage (and therefore speed) entirely to the bottom of the chart. Again though, I have replaced the sensor in question and the fault is still there. If there was an open circuit in the sensor or its wiring the ABS self test would fail and the ABS light would remain on
The difficult thing to prove is whether the wiring is going open circuit while on the move or there is a sensor signal failure
Being a gambler I'd put money on a signal failure
A faulty sensor could be the cause of signal failure, sensors do tend to be intermittent at times
The green trace has obvious either spikes or dropouts. So it's very simple as you say this is the rear, investigate this. Clearly there should not be any dropouts.
As a rough but temporary measure, you could extend wiring and swap left to right at the sensors and see if the problem moves sides. If it is wirijng...it will stay same side. If it is sensor or trigger related it will swap sides on your screen.
IF, and it's a big IF....you can swap sensors from side to side, you might be able to rule out sensors. Although highly likely they could be seized in-situ and may break on removal.
How consistent or inconsistent is the speed signal from that wheel over all vehicle speeds ?
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