Communication issue with Range Rover

Michael Owner/Technician Arizona Posted   Latest   Edited  
Unsolved
Driveability
2007 Land Rover Range Rover Supercharged 4.2L (3) 6-spd (6HP26) — SALSH23477A100959
U0416-94
U0403-94
U0421-94
P0915-00
U0132-86
U0403-68
C1A03-1C
U0416-86
C1130-66
U0132-87
U0182-87
U0159-87
U0127-87
Communication Issue

Hello all trying to help out another shop with this range rover, After driving about ½ hour or sometimes less all these codes store and goes into fail safe mode.

ALL TERRAIN CONTROL MODULE

3 Faults Present

U0416-94INVALID DATA RECEIVED FROM VEHICLE DYNAMICS CONTROL MODULE. Unexpected operation.
U0403-94INVALID DATA RECEIVED FROM TRANSFER CASE CONTROL MODULE. Unexpected operation.
U0421-94INVALID DATA RECEIVED FROM RIDE LEVEL CONTROL MODULE. Unexpected operation.

TRANSFER CASE CONTROL MODULE

2 Faults Present

P0915-00GEARSHIFT POSITION - CIRCUIT RANGE/PERFORMANCE. No sub type information.
U0132-86LOST COMMUNICATION WITH RIDE LEVEL CONTROL MODULE. Signal is invalid.

VEHICLE DYNAMICS CONTROL MODULE

1 Fault present

U0403-68INVALID DATA RECEIVED FROM TRANSFER CASE CONTROL MODULE. Event information.

RIDE LEVEL CONTROL MODULE

3 Faults Present

C1A03-1CFRONT LEFT HEIGHT SENSOR. Circuit voltage out of range.
U0416-86INVALID DATA RECEIVED FROM VEHICLE DYNAMICS CONTROL MODULE. Signal is invalid.
C1130-66AIR SPRING AIR SUPPLY. Signal has too many transitions/events.

INSTRUMENT CLUSTER

4 Faults Present

U0132-87LOST COMMUNICATION WITH RIDE LEVEL CONTROL MODULE. Missing a message.
U0182-87LOST COMMUNICATION WITH FRONT LIGHTING CONTROL MODULE. Missing a message.
U0159-87LOST COMMUNICATION WITH PARKING ASSIST CONTROL MODULE. Missing a message.
U0127-87LOST COMMUNICATION WITH TIRE PRESSURE MONITOR MODULE. Missing a message.

Thanks Mike

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Obie Technician
Washington
Obie
 

If none of those codes have a troubletree available I think locating a can diagram and location chart would be a start. Can you describe failsafe? I have seen T/case failures cause vehicles to go into a low gear and stay that way until cleared. Any safety related problem can cause various failsafe issues to occur. Lack of throttle or refusal to upshift come to mind.

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Mickey Owner/Technician
Florida
Mickey
 

Can you see a timeline of events? Who came first? The chicken or the egg? I’ve seen t-case and EAS failure take the whole pt-can down. Need to establish timeline. Weird that engine management and transmission don’t have codes.

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Greg Owner/Technician
Georgia
Greg
 

Hi Michael. I had one similar to this a few years ago that was hard to diagnose. i ended up leaving a scanner hooked up to the car and was able to verify the complaint. While active I performed a short test in hopes of finding if a control module on the bus was not identified. I found the parking brake module not communicating. Upon further investigation it was necessary to replace the module…

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Helpful
Tomasz Diagnostician
Ontario
Tomasz
 

Take a closer look at the instrument cluster. sounds like M/canbus is an issue and cluster its gateway.

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Allen Owner/Technician
Texas
Allen
 

Mike, that truck is actually a sport, the t/box controller is on the bulkhead behind the battery. Seen lots of issues with comms, shifter position what have you from corrosion on connectors. Check there. Allen

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Helpful
Stephen Technician
Oregon
Stephen
 

The ride height sensor circuit out of range code sorta jumps out at me. I'd poke around there for a bit to see whats up with that.

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