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Code C059D

Quick reference

C059D at a glance

Plain-language meaning
The car's computer can't find the right settings for a part that helps control the brakes.
Urgency
High – Brake system issues can affect vehicle safety.
Difficulty
Moderate
System
Sensor Issue
Tools mentioned
OBD-II scan tool, Multimeter, Brake pressure sensor calibration tool

This summary uses the existing diagnostic information shown in full below.

Laymans terms

The car's computer can't find the right settings for a part that helps control the brakes.

Explanation

The brake pressure sensor D is not calibrated, which means the system can't accurately measure brake pressure.

Technical description

The C059D code indicates that the Electronic Brake Control Module (EBCM) has detected that the brake pressure sensor D is not calibrated. This sensor is crucial for determining the hydraulic pressure in the braking system, and without proper calibration, it cannot provide accurate data.

Symptoms

• ABS warning light on

• Reduced braking performance

• Unusual brake pedal feel

Common Causes

• Faulty brake pressure sensor

• Incorrect installation of the sensor

• Software issue in the EBCM

Glossary

EBCM: Electronic Brake Control Module

ABS: Anti-lock Braking System

Diagnosis steps

• Check for any other related codes.

• Inspect the brake pressure sensor and its wiring.

• Use a scan tool to attempt a sensor calibration.

Repair procedures

• Replace the brake pressure sensor if faulty.

• Recalibrate the sensor using a diagnostic tool.

• Update the EBCM software if necessary.

Tools required

• OBD-II scan tool

• Multimeter

• Brake pressure sensor calibration tool

Estimated repair cost

$150 - $400

Difficulty level

Moderate

Commonly affected vehicles

• Chevrolet Silverado

• GMC Sierra

• Cadillac Escalade

Preventive measures

• Regular brake system maintenance

• Ensure software updates are applied

• Check sensor connections periodically

Error code type

Sensor Issue

User experience recommendations

• Do not ignore the ABS light on the dashboard.

• Have the brake system inspected by a professional.

Warranty information

Check with the vehicle manufacturer for warranty coverage on brake system components.

Historical data

This code has been more prevalent in vehicles with advanced braking systems introduced in the mid-2010s.

Urgency level

High – Brake system issues can affect vehicle safety.

Testing conditions

• Vehicle must be stationary.

• Ensure the brake system is cool to prevent inaccurate readings.

Component location

The brake pressure sensor is typically located near the master cylinder or within the ABS module.

FAQs

Q: Can I drive with this code?
A: It's not recommended as it may affect braking performance.

Q: How often should the brake system be checked?
A: It's advisable to have the brake system inspected at least once a year.

Optional diagnostic gear

Tools that may help diagnose C059D

FOXWELL Multi-System Scanner diagnostic tool illustration

Pro · Four-system diagnostics

FOXWELL Multi-System Scanner

A handheld scanner aimed at engine, transmission, ABS, and airbag diagnostic work.

Chassis and ABS faults usually need a scanner that can read brake-system data directly.

View on Amazon
EPAuto 1/2" Torque Wrench diagnostic tool illustration

Universal · Torque wrench

EPAuto 1/2" Torque Wrench

Useful when reassembly torque matters for wheel, suspension, and under-hood fasteners.

Useful when wheel, hub, or suspension hardware needs correct reassembly torque.

View on Amazon
MaxxHaul Vehicle Ramps diagnostic tool illustration

Universal · Drive-on ramps

MaxxHaul Vehicle Ramps

Helpful for safer access underneath the vehicle during exhaust, EVAP, and underbody inspection work.

Helpful for safer access during underbody inspection work.

View on Amazon

These are optional diagnostic tools, not guaranteed fixes. As an Amazon Associate I earn from qualifying purchases.

Source: ezOBD2 diagnostic database
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