P38A P1592 rough road signal implausible

cappedup · 2025-01-11T13:33:13+0000

kermit_rr said:
It's a while ago now and i don't have the car anymore.. but ..
The rough road signal tells the engine ECU to ignore any engine knock as it might actually be road/wheel knock.
I had a split reluctor ring which meant one of them gaps was slightly bigger than the others, the car sees this as the wheel speed fluctuating.
What engine do you have?

4.0 V8.
Is the reluctor ring part of the hub assembly? That being split makes perfect sense.
I was going to start by swapping the sensors at the box, see if the fault follows that.

kermit_rr · 2025-01-11T17:43:37+0000

On the p38 it's a press fit. Maybe the same for you.

P38A P1592 rough road signal implausible

cappedup

New Member

kermit_rr

Very

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