What Does C0588 Mean?
This code indicates that the ABS/ESC control module has detected an abnormally high voltage in the left rear brake pressure modulator solenoid circuit. The module expected a specific voltage range during solenoid operation, but measured voltage exceeding the upper threshold, suggesting a short to voltage, open circuit, or failed solenoid. This affects the vehicle's anti-lock braking and stability control systems' ability to modulate brake pressure at the left rear wheel.
Common Causes
35%
Damaged wiring harness or chafed insulation causing short to voltage between ABS module and left rear wheel speed sensor/solenoid connector
30%
Failed left rear ABS solenoid valve with internal short or open coil winding
20%
Corroded or damaged connector pins at the ABS hydraulic control unit or left rear wheel harness connection point
15%
Faulty ABS control module with internal driver circuit failure
Diagnostic Steps
1
Perform visual inspection of the wiring harness from the ABS hydraulic control unit to the left rear wheel area, checking for chafing, pinching, heat damage, or signs of wire contact with metal surfaces or moving components
2
Disconnect the ABS hydraulic control unit connector and measure resistance of the left rear solenoid circuit at the module connector (typically 2-6 ohms for solenoid coils); compare to manufacturer specifications
3
With harness disconnected at both ends, use a digital multimeter to check for short to voltage (measure voltage on solenoid circuit wires with key on, should read 0V) and continuity to ground (should show open circuit/infinite resistance)
4
Inspect all connector terminals at the ABS module and wheel end for corrosion, bent pins, moisture intrusion, or pushed-back terminals; clean and apply dielectric grease if corrosion is present
5
If wiring and connections test normal, perform resistance test directly at the solenoid valve terminals on the hydraulic control unit to isolate solenoid failure versus module failure
6
Clear codes and perform test drive with active monitoring of solenoid operation using scan tool bidirectional controls to verify repair; monitor for code recurrence and proper ABS/ESC function
Estimated Repair Cost
$150 - $1,200
Parts + labor, varies by vehicle and location
This code indicates that the ABS/ESC control module has detected an abnormally high voltage in the left rear brake pressure modulator solenoid circuit. The module expected a specific voltage range during solenoid operation, but measured voltage exceeding the upper threshold, suggesting a short to vo...
The most common cause of C0588 (Left Rear Solenoid Circuit High) is: Damaged wiring harness or chafed insulation causing short to voltage between ABS module and left rear wheel speed sensor/solenoid connector
Typical repair costs for C0588 range from $150 to $1,200, depending on the vehicle, location, and whether you do it yourself or go to a shop.
Vehicle remains drivable with normal braking function, but anti-lock braking and stability control features will be disabled or limited at the left rear wheel, increasing stopping distances on slippery surfaces and reducing vehicle stability in emergency maneuvers. Repair within one week recommended, avoid aggressive driving and wet/icy conditions.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to C0588 to identify the root cause.
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Quick Info
Category
Chassis
System
Anti-lock Braking System (ABS) / Electronic Stability Control (ESC)
Difficulty
Type
Generic (SAE)
Recommended Tools
OBD2 Scanner
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