XJ XJ8 / XJR ( X308 ) 1997 - 2003

2001 XJR P0730, no gears while in D

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Old Nov 22, 2025 | 08:17 AM
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Default 2001 XJR P0730, no gears while in D

Hello all,

I was driving in sport mode very hard today and while rolling, lost all gears while in D. Pulled over, cycled between D, P, R (which worked!) then back to D (while then worked thankfully).

I rolled to a stop and while in D was able to rev freely far beyond the protective 3k limit you have in P.

Looked with the code reader and had P0730 stored - incorrect gear ratio, which I guess makes sense if the RPM was able to go between idle and maybe 6k while it 'thought' it was in gear.

I couldn't make it do it again, but the big question is why, and even bigger, how can I fix this?

Thank you!
 
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Old Nov 22, 2025 | 08:46 AM
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Check the fluid level before digging any deeper
 
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Old Nov 22, 2025 | 09:19 AM
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Info for you.
 
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Old Nov 22, 2025 | 10:18 AM
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Thanks both, I'll check how to look at the level and go from there.

Much appreciated.
 
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