B2135: Park Brake Applied Warning Lamp Circuit Failure

What does B2135 mean?

B2135 is a diagnostic trouble code indicating "Park Brake Applied Warning Lamp Circuit Failure". This code relates to your vehicle's lighting and should be diagnosed to determine the root cause. The severity level helps indicate how urgently this should be addressed.

Symptoms you may notice

• Check engine light (MIL) illuminated on dashboard
• ABS warning light on
• Brake pedal feels different
• Unusual braking behaviour
• Intermittent warning lights

Common causes

• Faulty lighting component
• Wiring or connector issue in the related circuit
• Failed sensor providing incorrect readings
• Software/calibration issue requiring ECU update
• Related component causing secondary fault

What should you do?

This is a critical issue. Stop driving as soon as it is safe to do so and have the vehicle inspected immediately. Continuing to drive could cause further damage or pose a safety risk.