Bulletin Number: 15-221-18R; Revised 02/12/21
Page 40 of 45
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“Route Calculation Unsuccessful” message is displayed when trying to calculate a route
CAUSE:
If a MOTA (Map Over The Air) update was performed or attempted previously, the state
map data may have become corrupted. This can occur due a weak Wi Fi signal during MOTA update
causing the update interrupt resulting in the data corruption.
RECOMMENDATION:
Successfully updating the map data again using a strong and reliable Wi Fi
signal or using USB Flash drive with the latest Map data downloaded from PC would restore missing
map data.
DTCs
10.0
CONDITION# 10.1:
Code B2242 (2018 Legacy/ Outback equipped with Manual HVAC):
CAUSE:
This code is related to UART communication failure with the Auto HVAC panel. Usually It
gets triggered, when there is no communication with Auto HVAC module. The diagnosis for B2242
does not include any information related to vehicles equipped with Manual HVAC. It leads to the
time loss and some confusion.
RECOMMENDATION:
In the vehicles equipped with Manual HVAC the code B2242 does not
offer any practical information and could be ignored. Service bulletin would be published to further
address the code B2242 with Manual A/C Panel.
CONDITION# 10.2:
Code B2253-DAMAGING A COIL DUE TO THE ELECTRIC CURRENT
TO THE SPEAKER COIL
CAUSE:
When performing a DTC diagnostic check on vehicles equipped with Rockford Fosgate
Audio upgrade accessory installed, a DTC B2253 – “DAMAGING A COIL DUE TO THE
ELECTRIC CURRENT TO THE SPEAKER COIL” may be found. This DTC can be a result of
incongruent values between the expected output impedance of the vehicle head unit and the input
impedance of the accessory amplifier. The head unit is expecting to see a speaker load which
differs from the load of the amplifier board. The DTC will be stored in memory and will show on a
diagnostic check.
