gearbox fault message

This site contains affiliate links for which LandyZone may be compensated if you make a purchase.
R

road runner

New Member
Posts
13
hi guy's just bought my 3rd rr p38 4.0 se auto it has started flaging up the gerabox fault message whan i start up and switch off also the gear changes have gone rather harsh and the sport mode won't work plus the d symbol in the display dissapears nad she won't kick down either another thread i read elsewhere siad it's either a dodgy battery or the connector's under the expansion tank need cleaning i have fitted a new battery and cleaned the connector's but the message is still there will the code need to be cleared to resrt the system or should it reset itself ?????
 
Last edited:
If the battery is good and all the connections and fuse box are OK, I'd look to see if it has any oil in it and also check the colour of the oil. Black means trouble. Diagnostics would also be a good idea.
 
hi had the diagnostics on the car today and it turns out to be the throttle position sensor has gone iffy so where is this on the rang rover 3950 engine am i right in thinking it's the little round thing opposite where the throttle cable fits to the throttle body and held in place by two screw's
 
well so much for diagnostic's fitted new tps and brand new battery cleaned connectors under expansion tank and the gearbox fault message it still there i haven't got the money to keep throwing at it so can anyone help! MY NEXT SUSPICION IS THE GEARBOX ECU ???the car starts and drives it doese everything it should exept that the changes are harsh and the sport mode don't work so what is the problem? can any one tell me as i am ripping my hair out ( and i ain't got much of that)
 
road runner said:
well so much for diagnostic's fitted new tps and brand new battery cleaned connectors under expansion tank and the gearbox fault message it still there i haven't got the money to keep throwing at it so can anyone help! MY NEXT SUSPICION IS THE GEARBOX ECU ???the car starts and drives it doese everything it should exept that the changes are harsh and the sport mode don't work so what is the problem? can any one tell me as i am ripping my hair out ( and i ain't got much of that)
Click to expand...
Under the passenger seat is the transfer box ECU, have a sniff and see if it smells of burning, try and see if you can select low range. a duff transfer ECU can give the symptoms you describe. Transfer ECU's fail more often than Auto box ECU's.

Have you checked the oil?
 
Last edited:
hi yes have dipped atf all seem's ok there will have a sniff at transfer ecu and try transfer box to see if it works i have just tried the tranfer box it went in 3 bleeps i drove the car and it came out 3 beeps if anything there may be a little too much oil in the box i will recheck ! the chap had the diagnotics on it again today and recon's the transmission isn't getting the message about the vehicle speed? he is having it in on tuesday next to do a pin check on the connector's
 
hi all i have still got this gearbox fault message so far iv'e changed the tps iv'e cleaned out the connectors under the expansion tank with contact cleaner and fitted a brand new battery and still no joy noe the only other thing's i can put it down to are the speed sensor transducer or the box itself any ideas the 4x4 guy who's had the car two day's dont seem to know what he is doing so please help!!!!!!
 
road runner said:
hi all i have still got this gearbox fault message so far iv'e changed the tps iv'e cleaned out the connectors under the expansion tank with contact cleaner and fitted a brand new battery and still no joy noe the only other thing's i can put it down to are the speed sensor transducer or the box itself any ideas the 4x4 guy who's had the car two day's dont seem to know what he is doing so please help!!!!!!
Click to expand...
You need diagnostics.
 
i believe he is using autologic diagnostic's so are these ok with r/rover's or doese it need test book my chap say's it's a broken wire between the engine and auto box ecu's can this be the problem
 
road runner said:
i believe he is using autologic diagnostic's so are these ok with r/rover's or doese it need test book my chap say's it's a broken wire between the engine and auto box ecu's can this be the problem
Click to expand...
Sounds like he's guessing. On the diesel, the only wire I remember that goes direct from the auto box ECU to the EDC is the torque reduction request line on the diesel. There may be others.
 
hi can anyone tell me where the in line connector's c551 and c659 are on the p 38 car i also need the wire colour to pin 5 inc551 and the wire colour tp pin 7 on c659 if any one can help me please i need this fixed for next friday
 
road runner said:
hi can anyone tell me where the in line connector's c551 and c659 are on the p 38 car i also need the wire colour to pin 5 inc551 and the wire colour tp pin 7 on c659 if any one can help me please i need this fixed for next friday
Click to expand...
The connectors and their locations are all detailed in RAVE as are wire colours although LR are not reliable with the colours.
 
You must log in or register to reply here.

Similar threads

Blob
L322 Gearbox Speed Sensor?
Replies
3
Views
3K
Craigyboy90
C
Rob4x40
L322 TD6 transmission adventures
Replies
13
Views
4K
badfluffy
badfluffy
A
2004 v6 freelander auto
Replies
3
Views
489
Nodge68
Nodge68
alexmcrobbie
P38A Phantom gearbox/alternator/EAS fault
2 3 4
Replies
75
Views
12K
Grrrrrr
Grrrrrr
E
P38A NEW Alternator faulty??
Replies
6
Views
2K
Henrik97
H
Back
Top