Range Rover. Manual — part 155
ZF AUTO
21
DESCRIPTION AND OPERATION
Fault effects and warning indications - Diesel vehicles from 95MY
and petrol vehicles up to 99MY
Fault code
Fault description
Effect
MIL
Warning
lamp
’GEARBOX
FAULT’
message
1
* Solenoid supply
malfunction
Limp home mode in third if
stationary, fourth if moving.
On
Yes
2
* EAT ECU data
corrupted (ROM and
checksum values
disagree)
Limp home mode in third if
stationary, fourth if moving.
On
†
Yes
5
* Throttle angle
malfunction
Substitute throttle angle of 30%
used.
On
Yes
6
* Shift solenoid MV1
malfunction
Limp home mode in third if
stationary, fourth if moving.
On
Yes
6
* Shift solenoid MV1
short
Limp home mode in third if
stationary, fourth if moving.
On
Yes
7
* Shift solenoid MV2
malfunction
Limp home mode in third if
stationary, fourth if moving.
On
Yes
7
* Shift solenoid MV2
short
Limp home mode in third if
stationary, fourth if moving.
On
Yes
9
* MES 1 fault
No default condition. BeCM
recognises sport mode as a fault,
economy as low range manual and
manual as economy.
No
No
10
* MES 2 fault
No default condition. BeCM
recognises sport mode as a fault,
economy as low range manual and
manual as economy.
No
No
12
* Throttle angle
electrical short
Substitute throttle angle of 30%
used.
On
Yes
13
* EAT ECU circuit
output state does not
match command state
Limp home mode in third if
stationary, fourth if moving.
On
Yes
20
* Solenoid supply
malfunction
Limp home mode in third if
stationary, fourth if moving.
On
†
Yes
21
* Engine speed signal
out of range
Limp home mode in third if
stationary, fourth if moving.
On
†
Yes
21
* Engine speed, no
signal
Limp home mode in third if
stationary, fourth if moving.
On
†
Yes
22
* Pressure control
regulator malfunction
Limp home mode in third if
stationary, fourth if moving.
On
Yes
*= Emissions (OBDll) relevant
†= MIL illuminates immediately (in all other faults, MIL on illuminates in the 2nd consecutive drive cycle if the fault
is still present)
44
AUTOMATIC GEARBOX
NEW RANGE ROVER
22
DESCRIPTION AND OPERATION
Fault effects and warning indications - Diesel vehicles from 95MY
and petrol vehicles up to 99MY (continued)
Fault code
Fault description
Effect
MIL
Warning
lamp
’GEARBOX
FAULT’
message
22
* Pressure control
regulator electrical
short
Limp home mode in third if
stationary, fourth if moving.
On
Yes
23
* Engine torque
reduction
Shift pressure to maximum, no shift
ignition retard, harsh gear
shifts/engagement.
On
Yes
24
* Output speed sensor
signal out of range
Limp home mode in third if
stationary, fourth if moving.
On
Yes
26
* Engine torque signal
out of range
Shift pressure to maximum, harsh,
erratic or elongated shifts can
occur.
On
Yes
27
* Output speed
sensor, no signal
Limp home mode in third if
stationary, fourth if moving.
On
Yes
28
* EAT ECU data
corrupted (ROM and
EEPROM values
disagree)
Limp home mode in third if
stationary, fourth if moving.
On
†
Yes
30
* Gear position switch
status inaccurate with
engine running
Limp home mode in third if
stationary, fourth if moving.
On
Yes
31
* Gear position switch
status inaccurate
when starting engine
Limp home mode in third if
stationary, fourth if moving.
On
Yes
The following fault codes apply to Diesel vehicles from 97MY onwards
and petrol vehicles up to 99MY only
40
* First gear ratio
incorrect
Limp home mode in third if
stationary, fourth if moving.
On
Yes
41
* Second gear ratio
incorrect
Limp home mode in third if
stationary, fourth if moving.
On
Yes
42
* Third gear ratio
incorrect
Limp home mode in third if
stationary, fourth if moving.
On
Yes
43
* Fourth gear ratio
incorrect
Limp home mode in third if
stationary, fourth if moving.
On
Yes
44
* Torque converter
lock-up gear ratio
incorrect
Limp home mode in third if
stationary, fourth if moving.
On
Yes
*= Emissions (OBDll) relevant
†= MIL illuminates immediately (in all other faults, MIL on illuminates in the 2nd consecutive drive cycle if the fault
is still present)
ZF AUTO
23
DESCRIPTION AND OPERATION
Fault effects and warning indications - Petrol vehicles from 99MY
Fault code
OBDll
(TestBook)
Fault description
Effect
MIL
Warning
lamp
’GEARBOX
FAULT’
message
P0705
(14, 23)
* Gear position switch,
incorrect outputs
Maintains current gear in low range,
limp home mode in high range. Shift
pressure to maximum, harsh gear
shifts/engagement.
On
Yes
P7021
(21)
* Downshift safety
monitor prevented
downshift which would
have caused engine
overspeed
Maintains current gear in low range,
limp home mode in high range. Shift
pressure to maximum, harsh gear
shifts/engagement.
On
Yes
P0722
(22)
* Torque converter
slipping
Maintains current gear in low range,
limp home mode in high range. Shift
pressure to maximum, harsh gear
shifts/engagement.
On
Yes
P0731
(29)
* Ratio monitoring,
implausible 1st gear
ratio
No apparent effect.
On
No
P0732
(30)
* Ratio monitoring,
implausible 2nd gear
ratio
No apparent effect.
On
No
P0733
(31)
* Ratio monitoring,
implausible 3rd gear
ratio
No apparent effect.
On
No
P0734
(32)
* Ratio monitoring,
implausible 4th gear
ratio
No apparent effect.
On
No
P0741
(5)
* Torque converter
lock-up clutch fault
May affect driveability.
On
No
P0743
(7, 25)
* Torque converter
lock-up solenoid
(MV 3), open or short
circuit
Limp home mode in low and high
ranges. Shift pressure to maximum,
harsh gear shifts/engagement.
On
Yes
P0748
(10, 28)
* Pressure regulating
solenoid (MV 4), open
or short circuit
Limp home mode in low and high
ranges. Shift pressure to maximum,
harsh gear shifts/engagement.
On
Yes
P0753
(8, 26)
* Shift solenoid
(MV 1), open or short
circuit
Limp home mode in low and high
ranges. Shift pressure to maximum,
harsh gear shifts/engagement.
On
Yes
*= Emissions (OBDll) relevant
†= MIL illuminates immediately (in all other faults, MIL on illuminates in the 2nd consecutive drive cycle if the fault
is still present)
44
AUTOMATIC GEARBOX
NEW RANGE ROVER
24
DESCRIPTION AND OPERATION
Fault effects and warning indicators - Petrol vehicles from 99MY (continued)
Fault code
OBDll
(TestBook)
Fault description
Effect
MIL
Warning
lamp
’GEARBOX
FAULT’
message
P0758
(9, 27)
* Shift solenoid (MV
2), open or short
circuit
Limp home mode in low and high
ranges. Shift pressure to maximum,
harsh gear shifts/engagement.
On
Yes
P1562
(24)
* Battery supply below
9 V while engine
running
Maintains current gear in low range,
limp home mode in high range. Shift
pressure to maximum, harsh gear
shifts/engagement.
Off
Yes
P1601
(4)
* ECU, EEPROM
checksum
Limp home mode in low and high
ranges. Shift pressure to maximum,
harsh gear shifts/engagement.
On
On
P1602
(36)
* Transmission
calibration selection
incorrect or invalid
Default to 4.0 litre calibration.
On
Yes
P1606
(3)
* ECU fault, EEPROM
communication
No apparent effect.
On
†
No
P1606
(6)
* Watchdog check,
ECU fault
Limp home mode in low and high
ranges. Shift pressure to maximum,
harsh gear shifts/engagement.
On
Yes
P1612
(2)
* Solenoid valves
power supply relay,
sticking closed or
open circuit
Limp home mode in low and high
ranges. Shift pressure to maximum,
harsh gear shifts/engagement.
On
Yes
P1613
(1)
* Solenoid valves
power supply relay,
sticking open or short
circuit
Limp home mode in low and high
ranges. Shift pressure to maximum,
harsh gear shifts/engagement.
On
Yes
P1705
(39)
Transmission high/low
range, implausible
input
No apparent effect.
On
No
P1810
(12, 13)
BeCM to message
centre circuit fault
Message centre does not display ’S’
or ’LM’. No effect on gearbox
operation.
On
No
P1841
(16)
* CAN bus fault
Maintains current gear in low range,
limp home mode in high range. Shift
pressure to maximum, harsh gear
shifts/engagement.
On
Yes
P1842
(15)
* CAN level
monitoring
Maintains current gear in low range,
limp home mode in high range. Shift
pressure to maximum, harsh gear
shifts/engagement.
On
Yes
*= Emissions (OBDll) relevant
†= MIL illuminates immediately (in all other faults, MIL on illuminates in the 2nd consecutive drive cycle if the fault
is still present)
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