639 / 1006
ELECTRICAL
27
Sr
No DTC No Code
Description
Probable causes
Rectification/Repair actions
9
P0602 -
57
Control Module
Programming
Error - invalid /
incomplete
software
component
1) An invalid software
downloaded into EPAS
ECU.
1) Reflash EPAS ECU with correct
software. if DTC are still persists than
replace ECU.
10 U0401 -
81
Invalid Data
Received From
ECM/PCM "A" -
invalid serial
data received
1) EPAS ECU is getting
implausible status for the
signal coming from
ECM/PCM"A".
1) Follow the process to rectify
functional DTC present in
ECM/PCM"A".
11 U0423 -
81
Invalid Data
Received From
Instrument
Panel Cluster
Control Module -
invalid serial
data received
EPAS ECU is getting
implausible status for the
signal coming from IPC.
1) Follow the process to rectify
functional DTC present in IPC
12 U0423 -
82
Invalid Data
Received From
Instrument
Panel Cluster
Control Module -
alive / sequence
counter incorrect
/ not updated
1) EPAS ECU receives an
expected CAN signal with
information indicating that
the data is not updated.
1) If DTC is in current state then
switch off IGN and wait for 5 min. then
switch ON again.
If DTC is in history state then clear
DTC from ECU memory.
13 U0423 -
83
Invalid Data
Received From
Instrument
Panel Cluster
Control Module -
value of signal
protection
calculation
incorrect
1) The ECU receives
incorrect data due to
presence of
Electromagnetic Noise in
vehicle.
1) If DTC is in current state then
switch off IGN and wait for 5 min. then
switch ON again.
if DTC is in history state then clear
DTC from ECU memory.
14 U0100 -
08
Lost
Communication
With ECM/PCM
"A" - Bus Signal
/ Message
Failures
1) No Communication with
ECM/PCM"A" ECU.
1) Check ECM/PCM ECU connector is
properly connected, if ECU connector
does not connect connects the
connector to ECU.
2) Check resistance between CAN
lines (should be Approx. ~60 ohm). if
measured resistance is approximately
equal to 120 ohm then ECM/PCM"A"
is disconnected form the Network.
Connect the ECU to network.
3. Check ECM / PCM ECU power
supply line and ground line connection
from wiring harness. if any problem
repair the wiring line.
After fixing the issues check by
Diagnostic Tool whether DTC is
present in current state or not.