What Does U0061 Mean?
The negative wire of communication bus D is reading below normal voltage threshold. This indicates a short to ground or excessive current draw in the CAN D- circuit.
Common Causes
35%
Short to ground in CAN D- wire
25%
Faulty control module with internal short to ground on bus pin
20%
Damaged connector causing intermittent ground contact
15%
Pinched or chafed wiring harness grounding against chassis
5%
Water intrusion creating ground path through corrosion
Diagnostic Steps
1
Step 1: Measure voltage on CAN D- line with ignition on; should read approximately 2.5V, not near ground
2
Step 2: Test for short to ground using ohmmeter between CAN D- and chassis ground with ignition off
3
Step 3: Disconnect modules one at a time while monitoring resistance to ground to identify faulty module
4
Step 4: Inspect wiring harness routing for areas where wire may contact sharp edges or moving parts
5
Step 5: Verify proper bus biasing by measuring voltage differential between CAN D+ and CAN D- during communication
Estimated Repair Cost
$150 - $900
Parts + labor, varies by vehicle and location
The negative wire of communication bus D is reading below normal voltage threshold. This indicates a short to ground or excessive current draw in the CAN D- circuit.
The most common cause of U0061 (Vehicle Communication Bus D (-) Low) is: Short to ground in CAN D- wire
Typical repair costs for U0061 range from $150 to $900, depending on the vehicle, location, and whether you do it yourself or go to a shop.
Multiple safety systems may be compromised including ABS, traction control, and airbag deployment. Vehicle operation may be severely limited or unsafe.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to U0061 to identify the root cause.
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Quick Info
Category
Network
System
Vehicle Communication Network
Difficulty
Type
Generic (SAE)
Recommended Tools
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