C0588 — Left Rear Solenoid Circuit High

Causes

• Open or damaged wiring in left-rear solenoid circuit
• Corroded or loose connector at the wheel solenoid or ABS modulator
• Short to battery voltage (power feed) on the solenoid control wire
• Failed left-rear solenoid coil (high internal resistance or open)
• Faulty ABS/traction control module or driver transistor
• Blown fuse or poor ground related to ABS modulator circuit

Symptoms

• ABS warning lamp (ABS/Traction Control light) illuminated
• Possible stability/traction control warning messages
• Reduced or disabled ABS operation on left-rear wheel; longer stopping distance under some conditions
• Brake pedal feel may be normal at low speed but ABS may not engage when expected
• Stored DTC C0588 (may be accompanied by other ABS/traction codes)

What to check

• Use an OBD-II/scan tool to read and record all ABS/chassis codes and freeze frame data
• Visually inspect left-rear wheel area wiring, connector, and solenoid for damage, corrosion, moisture, or disconnection
• Inspect harness routing from left rear to ABS modulator for chafing, pinches, or prior repair splice points
• Check ABS-related fuses and ground points for security and corrosion
• With ignition ON (engine OFF), back-probe the solenoid connector and measure voltage at relevant pins
• Measure solenoid coil resistance at the wheel connector (with harness unplugged)

Signal parameters

• Vehicle system voltage: nominal 12–14.5 V (key ON, engine running)
• Solenoid coil resistance (typical range): approx. 5–40 Ω (manufacturer-specific — consult service manual). An open/infinite resistance indicates a failed coil.
• Control circuit behavior: normally the module either grounds the low-side to energize or uses PWM; expected at control pin when OFF: near battery voltage (~11–13 V); when ON/grounded: near 0–1 V (or pulsed between 0 and battery when PWM).
• Current draw when energized: typically 0.2–2 A depending on coil resistance and design. Compare to shop manual spec.

Similar codes