C1A081C
Pressure
sensor supply
voltage out of
range
Pressure sensor
harness wiring: short
circuit to ground,
short circuit to
power, high
resistance
Pressure sensor
failure
Air suspension
control module
failure
Refer to the guided diagnostic routine for this code on the
approved diagnostic system. Refer to the warranty policy and
procedures manual if a module is suspect.
C1A091C
Pressure
sensor signal
voltage out of
range
Pressure sensor
disconnected
Pressure sensor
harness wiring: short
circuit to ground,
short circuit to
power, high
resistance
Pressure sensor
failure
Air suspension
control module
failure
Refer to the guided diagnostic routine for this code on the
approved diagnostic system. Refer to the warranty policy and
procedures manual if a module is suspect.
C1A1064
Pressure
fluctuates
when the
system is
inactive
Reservoir and air
spring pipes
incorrectly fitted to
front or rear valve
block (unions
reversed)
Corner valve stuck
open
Pressure sensor
harness wiring: short
circuit to ground,
short circuit to
power, high
resistance
Pressure sensor
failure
Air suspension
control module
failure
Check the reservoir and air spring pipes for correct routing and
installation. Refer to the guided diagnostic routine for this code
on the approved diagnostic system. Refer to the warranty policy
and procedures manual if a module is suspect.
C1A1164
Pressure
increases
when the
system is
inactive
Reservoir and air
spring pipes
incorrectly fitted to
front or rear valve
block (unions
reversed)
Corner valve internal
leak
Reservoir valve
internal leak
Pressure sensor
harness wiring: short
Check the reservoir and air spring pipes for correct routing and
installation. For corner valve, reservoir valve, pressure sensor
and circuit tests refer to the guided diagnostic routine for this
code on the approved diagnostic system.