U0132high severityNetwork
Lost Communication with Ride Level Control Module
on 2008 Isuzu Ascender 4.2L I6 · 4WD
What this code means
Cannot communicate with the air suspension or ride height control module.
Symptoms
- Suspension warning light
- Vehicle sitting low
- Ride height not adjusting
- Compressor running constantly or not at all
Common causes
- Air suspension module failure
- CAN bus wiring issue
- Module power loss
- Fuse blown
- Air compressor relay failure
Diagnostic steps
- Check ride level module fuse
- Test module power and ground
- Check CAN wiring
- Test air compressor operation
- Check height sensor signals
Repair notes
Check fuses and air compressor relay. Common on vehicles with air suspension (Lincoln, Mercedes, Range Rover).
Other Network codes on this vehicle
U0001
High Speed CAN Communication Bus
U0002
High Speed CAN Communication Bus Performance
U0003
High Speed CAN Communication Bus (+) Open
U0004
High Speed CAN Communication Bus (+) Low
U0005
High Speed CAN Communication Bus (+) High
U0006
High Speed CAN Communication Bus (-) Open
U0007
High Speed CAN Communication Bus (-) Low
U0008
High Speed CAN Communication Bus (-) High
U0009
High Speed CAN Communication Bus Shorted Together
U0010
Medium Speed CAN Communication Bus