Which cars report code C0040?

Code C0040 is named in 11 US owner complaints, 1 of them (9%) after a crash. Models: 8, model years 2004–2023. Chevrolet Colorado, Chevrolet Silverado 1500, Chevrolet Express Cutaway VAN, Chevrolet Impala, Chevrolet Malibu.

C0040 code: Brake Pedal Switch A

Q: What does code C0040 mean?

Brake Pedal Switch A. How to read C0040: the letter C means chassis (brakes, ABS, steering, suspension); the second digit 0 marks a generic SAE code shared by all makes; the last three characters 040 identify the specific fault.

Code C0040 is named in 11 US owner complaints, 1 of them (9%) after a crash. Models: 8, model years 2004–2023.

What the code means

Brake Pedal Switch A. Generic meaning per SAE J2012 (the same for all makes).

How to read C0040: the letter C means chassis (brakes, ABS, steering, suspension); the second digit 0 marks a generic SAE code shared by all makes; the last three characters 040 identify the specific fault.

ABS/ESC codes: wheel speed sensors, the ABS hydraulic unit and pump, brake booster, pressure and yaw sensors. A hit to a wheel or suspension often damages the wheel speed sensor or its wiring, so on a damaged car this code is a reason to inspect the hub, knuckle and control arms, not just swap the sensor.

Key figures

Complaints with this code: 11
after a crash: 1 (9%)
Models: 8
Model years: 2004–2023

Which models and years

Models whose owners name this code (8). Years link to the model year problems page.

Model	Years	Complaints
Chevrolet Colorado	2004, 2005	3
Chevrolet Silverado 1500	2006, 2014	2
Chevrolet Express Cutaway VAN	2008	1
Chevrolet Impala	2007	1
Chevrolet Malibu	2009	1
Chevrolet Traverse	2023	1
Honda CR-V	2018	1
Honda Pilot	2020	1

Components named together with the code

Component as the owner filed it (one complaint can list several).

Service brakes 9
Electrical system 3
Other 3
Forward collision avoidance 2
Suspension 2
Electronic stability control 1
Visibility 1

Complaints by model year

2004 1
2005 2
2006 1
2007 1
2008 1
2009 1
2014 1
2018 1
2020 1
2023 1

What to do if an auction car has this code

Inspect the wheel and suspension on the impact side: the wheel speed sensor is often damaged together with the hub or knuckle.
Check whether the ABS and ESC lights stay on after start-up.
After replacing sensors or the hydraulic unit, bleeding and scan tool adaptation may be required.

What owners report

Excerpts of owner complaints in the original wording. Owner statements not verified by the regulator; personal data removed.

ABS, TC, Service ESC, Service 4WD, Reduced Steering Assist. OBD2 Codes: C0040, U0414, U0121 populated. There is a short in the Electronic Brake Control Monitor, a part that should last way more than 3 years and 33k miles. $1300 to remove and replace EBCM.
Chevrolet Traverse 2023 · 2026-09
I took it back to the dealer and was told 3 other things was wrong with the car. Code-C0040-62 Brake lamp switch failure stuck. U3000-49 Multi purpose camerawave radar internal electronic failure. B2A60-97. Tech reset camera and the system still gave failure codes.
Honda Pilot 2020 · 2025-02
There were no warning indicators illuminated. The vehicle was taken to an independent mechanic where the following diagnostic codes appeared: C0035, C0040, C0050, uo077, U0126, uo151, uo422, uo401 and uo415. The vehicle was not repaired.
Chevrolet Silverado 1500 2014 · 2019-07

Related codes

Sources: public official US data (owner complaints) and the SAE J2012 standard. Complaints are owner statements not verified by the regulator. A code from a complaint does not replace a scan tool diagnosis. Data updated 2026-11-10.