Lost Communication With Active Roll Control Module
What does U0137 mean?
The U0137 code means the vehicle's onboard diagnostic system has detected: Lost Communication With Active Roll Control Module. This is a moderate severity code.
Common Symptoms
- Active roll control or stabilizer bar warning light on
- Vehicle body rolls excessively in turns
- Ride quality change -- stiffer or softer than normal
- Stability control light may be on
- Service suspension message on dashboard
Probable Causes (Ranked by Likelihood)
- Failed active roll control module Very High
- Damaged CAN bus wiring to roll control module High
- Active stabilizer bar actuator failure Moderate
- Hydraulic leak in active stabilizer system Moderate
- Active stabilizer bar link broken Low
Step-by-Step Diagnostic Procedure
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Scan for DTCs in the suspension and chassis modules
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Check CAN bus wiring and connector at the active roll control module
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Verify power supply and ground at the module
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Inspect active stabilizer bars and links for damage
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Check hydraulic fluid level in active roll control system if applicable
Frequently Asked Questions
Can I drive with code U0137?
You can drive short distances at moderate speeds. The active roll control system will be disabled, causing more body roll in turns. Reduce speed in curves and avoid sudden maneuvers.
What is active roll control?
Active roll control uses electronically or hydraulically controlled stabilizer bars to reduce body lean during cornering. This improves handling and comfort by keeping the vehicle flatter in turns.
Is active roll control expensive to repair?
Yes. These systems are complex and parts are costly. Repairs range from $400 for module issues to $2000 or more for hydraulic actuator or stabilizer bar replacement.