C1219 GMC Code - Brake Pressure Sensor Supply Voltage Circuit Low
Quick Answer
The Electronic Brake Control Module uses inputs from the Electronic Brake Control Brake Pedal Position Sensor to determine when the brake is applied and how much force is used. Common causes include Faulty Electronic Brake Control Module (EBCM), Electronic Brake Control Module harness is open or shorted, Electronic Brake Control Module circuit poor electrical connection. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
- What it means
- C1219 GMC indicates Brake Pressure Sensor Supply Voltage Circuit Low.
- Common causes
- Common causes include Faulty Electronic Brake Control Module (EBCM), Electronic Brake Control Module harness is open or shorted, Electronic Brake Control Module circuit poor electrical connection.
- Severity
- High - diagnose this code as soon as possible.
- Can I drive?
- Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
Code C1219 GMC Description
Brake pressure sensor information is communicated from the Electronic Brake Control Module (EBCM) to the Hybrid Control Processor (HCP). This information is used to schedule regenerative braking and engine autostops.
The Diagnostic Trouble Code (DTC) will be set when the Engine Control Module (ECM) detects a corrupted data message from the Electronic Brake Control Module.
What are the Possible Causes of the DTC C1219 GMC?
- Faulty Electronic Brake Control Module (EBCM)
- Electronic Brake Control Module harness is open or shorted
- Electronic Brake Control Module circuit poor electrical connection
- Faulty Starter/Generator Control Module
How to Fix the DTC C1219 GMC?
Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.
Code Tech Notes
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the C1219 GMC code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.
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Information for Specific GMC Models
- C1219 2014 GMC Sierra — Brake Pressure Sensor Supply Voltage Circuit Low
- C1219 2015 GMC Sierra — Brake Pressure Sensor Supply Voltage Circuit Low
- C1219 2016 GMC Sierra — Brake Pressure Sensor Supply Voltage Circuit Low
- C1219 2017 GMC Sierra — Brake Pressure Sensor Supply Voltage Circuit Low
- C1219 2018 GMC Sierra — Brake Pressure Sensor Supply Voltage Circuit Low
Frequently Asked Questions about C1219 GMC Code
1. What does the OBDII code C1219 mean on a GMC vehicle?
C1219 indicates a problem with the brake pressure sensor supply voltage circuit, specifically that the voltage is too low.
2. What are the common symptoms of code C1219 in a GMC vehicle?
Symptoms may include the ABS warning light turning on, reduced braking performance, or inconsistent brake pedal feel.
3. What causes the C1219 code to appear on a GMC?
Common causes include a faulty brake pressure sensor, damaged wiring or connectors in the sensor circuit, or a failing ABS control module.
4. Can I still drive my GMC with the C1219 code present?
Driving with this code is not recommended, as it could affect the performance of the ABS system and compromise braking safety.
5. How is the C1219 code diagnosed in a GMC?
Technicians typically use a scan tool to verify the code, inspect the brake pressure sensor and its wiring, and check the voltage supply to the circuit.
6. How do you fix the C1219 code on a GMC vehicle?
Repairs may involve replacing the brake pressure sensor, repairing or replacing damaged wiring, or addressing a faulty ABS control module.
7. What tools are needed to troubleshoot the C1219 code on a GMC?
A multimeter, OBDII scanner, and wiring diagrams for the vehicle are commonly used for diagnosing this issue.
8. How much does it cost to repair the C1219 code on a GMC?
Repair costs vary but may range from $100 to $500, depending on whether the issue is with the sensor, wiring, or ABS module.
9. Can a low battery voltage cause the C1219 code to set on a GMC?
Yes, if the vehicle’s battery or charging system is not functioning properly, it can lead to low voltage in the brake pressure sensor circuit.
10. Will clearing the C1219 code fix the problem permanently?
No, clearing the code without addressing the underlying issue will likely result in the code returning. Proper diagnosis and repair are needed.
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