Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
DTC B2597: Traction Control/Suspension Switch Circuit (Short To Ground): Description
Traction control/suspension switch control circuit provides a ground input to Body Control Module (BCM) when switch is pressed. If BCM detects a ground on Brown/White wire when TCS is off, BCM will send signal on serial data line to Electronic Brake Traction Control Module (EBTCM) to turn on TCS. If BCM detects a ground when traction control system is on, BCM will send signal to EBTCM to turn off traction control system. BCM monitors traction control/suspension switch control circuit to determine how long a ground has been applied.
DTC B2597 will set when BCM detects a ground in Brown/White wire for longer than 60 seconds. If vehicle speed is detected, PCM may disable fuel supply to engine. No driver warning message will be displayed. If conditions for malfunction no longer exist, history DTC will clear after 50 consecutive ignition cycles. DTC B2597 will also clear when conditions no longer exist, and Instrument Panel Cluster (IPC) or scan tool is used to clear codes.
NO RELATED
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Affiliate disclosure: We may earn a commission at no extra cost to you.
When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.