C1248 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 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 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?
- 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?
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 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.
Need more information about the C1248 code?
Need more information on how to fix the C1248 code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the C1248 code diagnosed by a professional: Find a repair shop in your area
Information for Specific Makes
- C1248 Buick — Dynamic Rear Proportioning Control System
- C1248 Cadillac — Dynamic Rear Proportioning Control System
- C1248 Chevrolet — Dynamic Rear Proportioning Control System
- C1248 GMC — Dynamic Rear Proportioning Control System
- C1248 Lexus — Open Circuit in Rear Differential Lock
- C1248 Toyota — Open Circuit in Rear Differential Lock
Frequently Asked Questions about C1248 Code
1. What does the OBDII code C1248 mean?
C1248 indicates an issue with the Dynamic Rear Proportioning (DRP) control system, which is responsible for managing rear brake pressure distribution to maintain stability during braking.
2. What are common symptoms of code C1248?
Symptoms include the ABS warning light or traction control light turning on, reduced braking performance, and possible instability during heavy braking.
3. What causes the C1248 code to appear?
Common causes include a faulty ABS module, damaged wheel speed sensors, wiring issues, or hydraulic brake system malfunctions.
4. Can I drive with the C1248 code active?
While the vehicle may still be drivable, braking performance and stability could be compromised, especially in emergency situations. It’s advised to address the issue promptly.
5. How do you diagnose the C1248 code?
Diagnosis typically involves scanning the ABS system for codes, inspecting wheel speed sensors, checking the ABS module, and verifying the condition of related wiring and connectors.
6. What repairs can fix the C1248 code?
Repairs may include replacing a faulty ABS module, repairing or replacing wheel speed sensors, fixing damaged wiring, or addressing hydraulic system issues.
7. Does the C1248 code always mean the ABS module is bad?
No, the issue could also stem from wheel speed sensors, wiring problems, or other brake system components. Proper diagnosis is essential.
8. How much does it cost to fix the C1248 code?
Repair costs vary widely depending on the specific cause. ABS module replacement may cost $500-$1,200, while wheel speed sensor repairs are typically less expensive.
9. Can I reset the C1248 code without making repairs?
You may clear the code temporarily, but it will likely return if the underlying issue isn’t resolved.
10. How can I prevent the C1248 code from recurring?
Regular maintenance of the ABS system, including inspecting sensors, wiring, and brake components, can help prevent this code from reoccurring.
Discuss the causes and fixes for C1248 OBDII Code
Code C1248 comments
No comments found for this page.
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.
