What Does C0065 Mean?
This code indicates the ABS control module has detected an electrical fault in the left front wheel's second ABS solenoid valve circuit. The solenoid valve controls hydraulic pressure to modulate braking force during ABS activation. The malfunction was detected through abnormal voltage, resistance, or current draw in the solenoid circuit, preventing proper ABS function on the left front wheel.
Common Causes
35%
Failed ABS solenoid valve #2 within the hydraulic control unit (internal short, open circuit, or mechanical failure)
30%
Damaged wiring or connector between ABS module and hydraulic control unit (corrosion, chafing, broken wires)
20%
Internal ABS control module failure (driver circuit malfunction for solenoid #2)
10%
Poor ground connection at ABS hydraulic unit or control module
5%
Low system voltage or battery issues causing inadequate solenoid operation
Diagnostic Steps
1
Step 1: Perform visual inspection of ABS hydraulic control unit, wiring harness, and connectors for corrosion, damage, or moisture intrusion. Check connector terminals for bent pins or corrosion at the hydraulic unit.
2
Step 2: Using a digital multimeter, measure battery voltage (should be 12.4-12.8V key off, 13.8-14.5V running). Verify power and ground supply to ABS control module meets manufacturer specifications.
3
Step 3: Disconnect ABS hydraulic control unit connector and measure resistance of solenoid #2 circuit (typically 2-6 ohms). Compare to manufacturer specifications and other solenoid values for reference.
4
Step 4: Check for short to ground or short to power in the wiring between ABS module and hydraulic unit using continuity and resistance tests with harness disconnected at both ends.
5
Step 5: If wiring and solenoid resistance are within specifications, perform actuator test using scan tool bi-directional controls to command solenoid #2. Listen/feel for clicking and monitor current draw.
6
Step 6: Clear codes, test drive vehicle including multiple ABS activation events on safe surface, and verify repair by confirming code does not return and ABS functions properly on all wheels.
Estimated Repair Cost
$150 - $1,200
Parts + labor, varies by vehicle and location
This code indicates the ABS control module has detected an electrical fault in the left front wheel's second ABS solenoid valve circuit. The solenoid valve controls hydraulic pressure to modulate braking force during ABS activation. The malfunction was detected through abnormal voltage, resistance, ...
The most common cause of C0065 (Left Front ABS Solenoid #2 Circuit Malfunction) is: Failed ABS solenoid valve #2 within the hydraulic control unit (internal short, open circuit, or mechanical failure)
Typical repair costs for C0065 range from $150 to $1,200, depending on the vehicle, location, and whether you do it yourself or go to a shop.
Vehicle is safe to drive with normal braking function, but ABS will likely be disabled or operate improperly on the left front wheel, increasing stopping distance on slippery surfaces. Repair within 1-2 weeks, avoid aggressive driving in wet or icy conditions.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to C0065 to identify the root cause.
OBDHut Mobile App
Scan codes directly from your car with the OBDHut app.
Coming Soon
Quick Info
Category
Chassis
System
Anti-lock Brake System (ABS)
Difficulty
Type
Generic (SAE)
Recommended Tools
OBD2 Scanner
A quality scan tool helps you read codes, view live data, and clear faults.
