How is fault code P0572 fixed?

A typical diagnostic sequence used by mechanics, provided here for educational reference only. Diagnostic work should be performed by a qualified mechanic with the appropriate tools and training. 1. Have someone press the brake pedal while you watch the brake lights. No lights, or lazy lights, points you straight at the switch or its fuse before you touch the scanner. 2. Pull the codes properly and note anything alongside it. P0571 or P0573 sitting next to P0572 tells you the whole brake switch circuit is unhappy, not just one stuck signal. 3. Get up behind the pedal and look at the switch. Check it's clipped in square and hasn't drifted out of adjustment, then unplug the connector and check the pins for green corrosion or one that's been pushed back. 4. Back-probe the switch circuit with a multimeter. You're after roughly 5V at rest, climbing above 4.5V when the pedal goes down. A reading stuck low or jumping about confirms a circuit fault rather than a sensor that's simply worn. 5. Wiggle-test the loom near the pedal box while you watch the meter. If the voltage twitches, you've found a chafe or a broken strand hiding inside the insulation. 6. Check the relevant fuse last if you

Cruise Control/Brake Switch A Circuit Low

Jump to the fix

Severity

High

Can I keep driving?

Avoid extended driving; visit a service soon.

First step

A typical diagnostic sequence used by mechanics, provided here for educational reference only. Diagnostic work should be performed by a qualified mechanic with the appropriate tools and training. 1. Have someone press the brake pedal while you watch the brake lights. No lights, or lazy lights, points you straight at the switch or its fuse before you touch the scanner. 2. Pull the codes properly and note anything alongside it.

PPowertrain
0Generic code
5Speed / Idle
72Sequence number

What does it mean?

P0572 is a Powertrain (engine, transmission, fuel system) fault code. It indicates: Cruise Control/Brake Switch A Circuit Low . This is a standardised OBD-II code. The technical definition is the same regardless of the make or model of vehicle, although specific causes and symptoms can vary between vehicles.

Symptoms

Likely causes

How to fix it

Codes From the Same System

All Fault Codes

Related Similar Codes

This information follows the generic OBD-II definition and does not replace a vehicle-specific diagnosis. The severity rating is rule-based; an authorised diagnostic reading is required for a definitive answer.