C1248 Buick Code - Dynamic Rear Proportioning Control System
Quick Answer
Dynamic Rear Proportioning (DRP) is a control system that replaces the hydraulic proportioning function of the mechanical proportioning valve in the base brake system. Common causes include Faulty Electronic Brake Control Module (EBCM), Electronic Brake Control Module (EBCM) harness is open or shorted, Electronic Brake Control Module (EBCM) 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
- C1248 Buick indicates Dynamic Rear Proportioning Control System.
- Common causes
- Common causes include Faulty Electronic Brake Control Module (EBCM), Electronic Brake Control Module (EBCM) harness is open or shorted, Electronic Brake Control Module (EBCM) 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 C1248 Buick Description
The C1248 code will set when DTC C1214, C1217, C1237, C1254, C1255, C1261-1268, or C1271-1274 sets, DTC C1236 sets and system voltage is less than 8.5 volts, or two wheel speed sensor DTCs on same axle set.
What are the Possible Causes of the DTC C1248 Buick?
- Faulty Electronic Brake Control Module (EBCM)
- Electronic Brake Control Module (EBCM) harness is open or shorted
- Electronic Brake Control Module (EBCM) circuit poor electrical connection
How to Fix the DTC C1248 Buick?
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.
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the C1248 Buick 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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Frequently Asked Questions about C1248 Buick Code
What does the OBDII code C1248 mean on a Buick?
The C1248 code indicates an issue with the Dynamic Rear Proportioning (DRP) Control System, which helps balance braking pressure between the front and rear wheels.
What are common symptoms of the C1248 code?
Common symptoms include the ABS warning light being illuminated, reduced braking performance, or uneven brake pressure distribution.
What causes the C1248 code to appear?
Causes can include a faulty ABS module, damaged wiring or connectors, a malfunctioning wheel speed sensor, or issues with the brake pressure modulator.
Can I drive my Buick with the C1248 code active?
While the vehicle may still be drivable, braking performance could be compromised, especially in emergency situations. It’s best to address the issue promptly.
How is the C1248 code diagnosed?
A mechanic will use a scan tool to retrieve the code, inspect the ABS system components, check for damaged wiring, and test the wheel speed sensors and brake pressure modulator.
What repairs can fix the C1248 code?
Repairs may include replacing a faulty ABS module, repairing damaged wiring or connectors, replacing a malfunctioning wheel speed sensor, or addressing issues with the brake pressure modulator.
Can a weak battery cause the C1248 code?
Yes, low voltage or a weak battery can sometimes cause erratic ABS module behavior, which may trigger the C1248 code.
Is the C1248 code specific to Buick vehicles?
No, while the code commonly appears on Buick models, it can also apply to other GM vehicles with similar ABS systems.
Does the C1248 code always mean the ABS module is bad?
No, the issue could also be related to wiring, sensors, or other components in the braking system. A thorough diagnosis is necessary to pinpoint the cause.
How much does it cost to fix the C1248 code on a Buick?
Repair costs can vary widely, ranging from $100 for minor wiring repairs to over $1,000 if the ABS module or other major components need to be replaced.
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