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.
SYS.OK|MANUAL.DB● LIVE
HOMESERVICE MANUALSCHEVROLET2019TRAX PREMIER, AWDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 84 (HYDRAULIC BRAKE SYSTEM)DIAGNOSTIC INFORMATION AND PROCEDURESDTC P050FCIRCUIT/SYSTEM VERIFICATION
2019 Chevrolet Trax Premier, AWD
Circuit/System Verification
2019 Chevrolet Trax Premier, AWDSECTION Circuit/System Verification
WARNING: This page is about a different car, the 2018 Chevrolet Trax and 2018 Buick Encore. However, it is still accessible from the selected car via links, so may be relevant.
- Ignition ON/Vehicle in Service Mode.
- Verify that DTCs P0556, P0557, or P0558 are not set.
- If the DTC is set
Refer to DTC P0556, P0557, or P0558 .
- Go to next step: If the DTC is not set
- If the DTC is set
- Verify that the brake booster vacuum system has no damage, leakage or incorrect installation.
- If damage, leakage or incorrect installation is found
Refer to Brake Assist System Diagnosis .
- Go to next step: If the inspection is OK
- If damage, leakage or incorrect installation is found
- Test or replace the B19B Brake Booster Vacuum Sensor.
- Verify the DTC does not set while operating the vehicle under the Conditions for Running the DTC.
- If the DTC sets
Replace the K20 Engine Control Module.
- Go to next step: If the DTC does not set
- If the DTC sets
- All OK.
RENDER: 1.0x
NO RELATED
Recommended Tools & Savings
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.