DTC Description Possible Causes Action B1A59-11
Sensor 5 Volt
Supply - Circuit
short to ground
Air conditioning
pressure sensor or
RECIRC servo motor 5
volt supply circuits -
short to ground
Refer to the electrical circuit diagrams and check air
conditioning pressure sensor and RECIRC servo motor 5 volt
supply circuits for short to ground B1A59-13
Sensor 5 Volt
Supply - Circuit
open
Air conditioning
pressure sensor 5 volt
supply circuits - open
circuit
Refer to the electrical circuit diagrams and check air
conditioning pressure sensor 5 volt supply circuit for open
circuit B1A60-11
Pollution Sensor -
Hydrocarbon -
Circuit short to
ground
Pollution sensor
hydrocarbon input
circuit - short to ground
Refer to the electrical circuit diagrams and check pollution
sensor hydrocarbon input circuit for short to ground B1A61-11
Cabin Temperature
Sensor - Circuit
short to ground
In car temperature
sensor circuit - short to
ground
Refer to the electrical circuit diagrams and check In car
temperature sensor circuit for short to ground B1A61-15
Cabin Temperature
Sensor - Circuit
short to battery or
open
In car temperature
sensor circuit - short to
power, open circuit
Carry out any pinpoint tests associated with this DTC using
the manufacturer approved diagnostic system. Refer to the
electrical circuit diagrams and check In car temperature
sensor circuit for short to power, open circuit B1A63-11 Right Solar Sensor
- Circuit short to
ground
Right sun load sensor
signal circuit - short to
ground
Refer to the electrical circuit diagrams and check right sun
load sensor signal circuit for short to ground B1A64-11 Left Solar Sensor
- Circuit short to
ground
Left sun load sensor
signal circuit - short to
ground
Refer to the electrical circuit diagrams and check left sun
load sensor signal circuit for short to ground B1A67-13
Sensor Ground -
Circuit open
Sensor ground circuits -
open circuit
Refer to the electrical circuit diagrams and check sensor
ground circuits for open circuit B1A69-01
Humidity Sensor -
General electrical
failure
Humidity sensor PWM
input circuit - short to
ground, power, open
circuit
Sensor component
failure
Carry out any pinpoint tests associated with this DTC using
the manufacturer approved diagnostic system. Refer to the
electrical circuit diagrams and check humidity sensor PWM
input circuit for short to ground, power, open circuit. Check
and install a new sensor as required B1B62-11
Pollution Sensor -
NOx - Circuit
short to ground
Pollution sensor NOx
input circuit - short to
ground
Refer to the electrical circuit diagrams and check pollution
sensor NOx input circuit for short to ground B1B71-11
Evaporator Temperature
Sensor - Circuit
short to ground
Evaporator temperature
sensor signal circuit -
short to ground
Refer to the electrical circuit diagrams and check evaporator
temperature sensor signal circuit for short to ground B1B71-15
Evaporator Temperature
Sensor - Circuit
short to battery or
open
Evaporator temperature
sensor signal circuit -
short to power, open
circuit
Carry out any pinpoint tests associated with this DTC using
the manufacturer approved diagnostic system. Refer to the
electrical circuit diagrams and check evaporator
temperature sensor signal circuit for short to power, open
circuit B1B72-11
LIN Bus #1 Power
Supply Circuit -
Circuit short to
ground
Stepper motor circuit
LIN Bus #1 power
supply - short to
ground
Refer to the electrical circuit diagrams and check stepper
motor circuit LIN Bus #1 power supply for short to ground C1B14-13
Sensor Supply
Voltage A - Circuit
open
RECIRC servo motor 5
volt supply circuit -
open circuit
Refer to the electrical circuit diagrams and check RECIRC
servo motor 5 volt supply circuit for open circuit
