NHTSA ID Number: 11016934
Manufacturer Communication Number: SD-27-5023V
TSB/Document Date: 2025-04-10
Summary
Bendix
GSBC (Global Scalable Brake Control) System and EBS-90 Electronic Control Unit (ECU) service data sheets.
SD-27-5031
0x50C211
20674
17
Electro-Pneumatic Modulator
3: Circuit Short To Ground
The error is set if supply voltage of EPM
becomes less than 4V or if EPM consumes
more than 8A with supply of EPM switched on.
SD-27-5031
Table 20 - GSBC EPM-90 Diagnostic Trouble Codes (DTCs)
SD-27-5023V Rev 000 Bendix® GSBC® System and EBS-90™ (Global Scalable Brake Control System and Electronic Control Unit)
55
Troubleshooting
GSBC EPM-90 DTCS
DTC #
SPN
(J1939)
FMI
(J1939)
DTC NAME
DTC DESCRIPTION
SD SHEET
0x50C212
20674
18
Electro-Pneumatic Modulator
3: Circuit Short To Battery
The error is set if supply voltage of EPM
becomes higher than 4V with supply of EPM
switched off.
SD-27-5031
0x50C219
20674
25
Electro-Pneumatic Modulator
3: Circuit Current Above
Threshold
The error is set if supply voltage of EPM
becomes less than 4V or if EPM consumes
more than 8A with supply of EPM switched on.
SD-27-5031
0x50C225
20674
37
Electro-Pneumatic Modulator
3: Signal Shape/Waveform
Failure
The error is set if implausible voltage drop,
during valve activation, is detected.
SD-27-5031
0x50C229
20674
41
Electro-Pneumatic Modulator
3: Signal Invalid
EPM internal electrical failure.
SD-27-5031
0x50C256
20674
86
Electro-Pneumatic Modulator
3: Invalid/Incompatible
Configuration
The error is set if implausible voltage drop,
during valve activation, is detected.
SD-27-5031
0x50C296
20674
150
Electro-Pneumatic Modulator
3: Component Internal
Failure
The error is set if test routines detect an
internal hardware error of the EPM.
SD-27-5031
0x50C298
20674
152
Electro-Pneumatic Modulator
3: Component or System
Over Temperature
EPM PCB temperature exceeds the upper
threshold temperature (248°F/120°C).
SD-27-5031
0x50C29D
20674
157
Electro-Pneumatic Modulator
3: Component or System
Under Temperature
EPM PCB temperature exceeds the lower
threshold temperature (-40 degrees °F/°C).
SD-27-5031
0x50C322
20675
34
EPM0, Pressure Control
Loop0: Signal Amplitude
Greater Than Maximum
This fault detects trapped pressure in the FBM
and/or the EPM.
SD-27-5031
0x50C371
20675
113
EPM0, Pressure Control
Loop0: Actuator Stuck
This error is set if the EPM detects trapped
pressure.
SD-27-5031
0x50C377
20675
119
EPM0, Pressure Control
Loop0: Commanded Position
Not Reachable
This error is set if an EPM does not pass
an automatic performance test, which could
indicate trapped pressure.
SD-27-5031
0x50C37E
20675
126
EPM0, Pressure Control
Loop0: Actuator Stuck On
This fault detects trapped pressure in the FBM
and/or the EPM.
SD-27-5031
0x50C422
20676
34
EPM0, Pressure Control
Loop1: Signal Amplitude
Greater Than Maximum
This fault detects trapped pressure in the FBM
and/or the EPM.
SD-27-5031
0x50C471
20676
113
EPM0, Pressure Control
Loop1: Actuator Stuck
This error is set if the EPM detects trapped
pressure.
SD-27-5031
0x50C477
20676
119
EPM0, Pressure Control
Loop1: Commanded Position
Not Reachable
This error is set if an EPM does not pass
an automatic performance test, which could
indicate trapped pressure.
SD-27-5031
0x50C47E
20676
126
EPM0, Pressure Control
Loop1: Actuator Stuck On
This fault detects trapped pressure in the FBM
and/or the EPM.
SD-27-5031
0x50C522
20677
34
EPM1, Pressure Control
Loop0: Signal Amplitude
Greater Than Maximum
This fault detects trapped pressure in the FBM
and/or the EPM.
SD-27-5031
0x50C571
20677
113
EPM1, Pressure Control
Loop0: Actuator Stuck
This error is set if the EPM detects trapped
pressure.
SD-27-5031
0x50C577
20677
119
EPM1, Pressure Control
Loop0: Commanded Position
Not Reachable
This error is set if an EPM does not pass
an automatic performance test, which could
indicate trapped pressure.
SD-27-5031
0x50C57E
20677
126
EPM1, Pressure Control
Loop0: Actuator Stuck On
This fault detects trapped pressure in the FBM
and/or the EPM.
SD-27-5031
Table 20 - GSBC EPM-90 Diagnostic Trouble Codes (DTCs)
56
SD-27-5023V Rev 000 Bendix® GSBC® System and EBS-90™ (Global Scalable Brake Control System and Electronic Control Unit)
Troubleshooting
GSBC EPM-90 DTCS
DTC #
SPN
(J1939)
FMI
(J1939)
DTC NAME
DTC DESCRIPTION
SD SHEET
0x50C671
20678
113
EPM1, Pressure Control
Loop1: Actuator Stuck
This error is set if the EPM detects trapped
pressure.
SD-27-5031
0x50C677
20678
119
EPM1, Pressure Control
Loop1: Commanded Position
Not Reachable
This error is set if an EPM does not pass
an automatic performance test, which could
indicate trapped pressure.
SD-27-5031
0x50C67E
20678
126
EPM1, Pressure Control
Loop1: Actuator Stuck On
This fault detects trapped pressure in the FBM
and/or the EPM.
SD-27-5031
0x50C722
20679
34
EPM2, Pressure Control
Loop0: Signal Amplitude
Greater Than Maximum
This fault detects trapped pressure in the FBM
and/or the EPM.
SD-27-5031
0x50C771
20679
113
EPM2, Pressure Control
Loop0: Actuator Stuck
This error is set if the EPM detects trapped
pressure.
SD-27-5031
0x50C777
20679
119
EPM2, Pressure Control
Loop0: Commanded Position
Not Reachable
This error is set if an EPM does not pass
an automatic performance test, which could
indicate trapped pressure.
SD-27-5031
0x50C77E
20679
126
EPM2, Pressure Control
Loop0: Actuator Stuck On
This fault detects trapped pressure in the FBM
and/or the EPM.
SD-27-5031
0x50C822
20680
34
EPM2, Pressure Control
Loop1: Signal Amplitude
Greater Than Maximum
This fault detects trapped pressure in the FBM
and/or the EPM.
SD-27-5031
0x50C871
20680
113
EPM2, Pressure Control
Loop1: Actuator Stuck
This error is set if the EPM detects trapped
pressure.
SD-27-5031
0x50C877
20680
119
EPM2, Pressure Control
Loop1: Commanded Position
Not Reachable
This error is set if an EPM does not pass
an automatic performance test, which could
indicate trapped pressure.
SD-27-5031
0x50C87E
20680
126
EPM2, Pressure Control
Loop1: Actuator Stuck On
This fault detects trapped pressure in the FBM
and/or the EPM.
SD-27-5031
0x50C922
20681
34
EPM3, Pressure Control
Loop0: Signal Amplitude
Greater Than Maximum
This fault detects trapped pressure in the FBM
and/or the EPM.
SD-27-5031
0x50C971
20681
113
EPM3, Pressure Control
Loop0: Actuator Stuck
This error is set if the EPM detects trapped
pressure.
SD-27-5031
0x50C977
20681
119
EPM3, Pressure Control
Loop0: Commanded Position
Not Reachable
This error is set if an EPM does not pass
an automatic performance test, which could
indicate trapped pressure.
SD-27-5031
0x50C97E
20681
126
EPM3, Pressure Control
Loop0: Actuator Stuck On
This fault detects trapped pressure in the FBM
and/or the EPM.
SD-27-5031
0x50CA22
20682
34
- Mixes well with conventional fluids
- Low-moisture formula provides excellent vapor lock...
- Ideal for hydraulic and disc brakes
- Ideal for hydraulic and disc brakes
- Mixes well with conventional fluids
- Low-moisture formula provides excellent vapor lock...
If the PDF is very large, it may not load in the preview below.
Some older TSBs had multiple PDFs — visit the NHTSA Website to view all PDFs.
If the TSB PDF does not show, download or view it on the NHTSA Website.
Click on the (+) Plus Sign
Then Click on Associated Document(s)
Search NHTSA Database for Recalls
Search NHTSA Database for Vehicle Investigations
View Latest Vehicle Investigations
Search NHTSA Database for Vehicle Complaints
View Latest Vehicle Complaints
TSB/Document ID: SD-27-5023V
Replacement Service Bulletin Number:
MFR Communication Date: 2025-04-10
MFR Internal Campaign ID/Software Version:
Communication Type: Service Bulletin/Repair Instructions
NHTSA Components: SERVICE BRAKES
MFR Component System:
MFR Component Subsystem:
Previous TSB | Next TSB |
- [Notice] When you receive a used device, it may be a customer return resold by Amazon without inspection. You can exchange it for a new one through Amazon. As this situation is unavoidable, we sincerely apologize. For any issues, contacting us via Amazon's "Messages" is the best way. THINKSCAN 689BT Bidirectional Scan Tool Can Be Used Immediately After It is Turned On, Without Complicated Registration Process, Which is More Convenient & Quick.
- Full Bi-Directional Control & 3000+ Active Tests: Take control and test components like actuators, fuel injectors, relays, and cooling fans in real time. You’ll quickly see if the problem is in the part itself or the control module — saving you hours of guesswork and frustrating trial-and-error.
- Advanced ECU Coding Capabilities: Handle module matching and hidden feature activation with confidence. When you replace an ECU or want to customize settings, this obd2 scanner diagnostic bi directional tool gives you the professional-level capabilities you need without the dealership price tag.
- 34+ Useful Reset and Maintenance Functions: Complete everyday service tasks smoothly with a wide range of helpful reset and maintenance functions. Whether you’re keeping up with regular upkeep or tackling a specific job, this scanner makes maintenance simpler and less stressful for both DIYers and pros.
- Comprehensive Full System Diagnostics: Diagnose every major system — Engine, Transmission, ABS, SRS, TPMS, and more — all in one place. Finally stop wondering if you’re missing something important; get the full picture and clear codes with ease.
- Top Reasons to Choose the D7S OBD2 Scanner: XTOOL D7S car scan tool, an upgrade of XTOOL D7, offers comprehensive features for automotive technicians, workshops, and DIY enthusiasts 1. Upgraded Hardware: 2+64GB memory, rear camera, intuitive interface, foldable bracket 2. Complete Diagnostics: FCA
Autoauth, OE-level all system scan, 39+ maintenance services, 4K+ bidirectional, CANFD/DoIP protocol 3. Advanced Capabilities: ECU coding, PMI functions 4. Wide Compatibility: Support 10,000+ models, covering 99% vehicle brands 5. Multi-language: Available in 22+ languages, No IP Restrictions 6. 3-Year Updates: Save 300 bucks on software updates for the latest features and optimizations - 2026 Upgraded D7S Car Scanner Features: The newly 2026 D7S V2.0 scanner for car brings exciting features for advanced vehicle diagnostics and enhanced user experience 1. FCA AutoAuth: Now supports FCA SGW module for Chrysler, for Jeep, for Dodge (2018+), for Fiat (2017+), enabling faster vehicle communication without gateway restrictions 2. PMI (Offline ECU Programming): Allows for Ford, for Lincoln, and for Mazda ECU programming for new modules 3. Optimized Diagnostic Report 2.0: Personalized reports with logos and customer info for auto shops. Note: Compatibility varies by cars, please check before order
- Cost-effective ECU Coding Scan Tool for Specific Brands: Enhance your vehicle's performance with XTOOL D7S! This obd2 scanner all systems bidirectional offers advanced capabilities at an affordable price, supports online for BMW, for Benz and offline for BENZ, for MIT, along with PMI functions for Ford, for Mazda, and for Lincoln. Ideal for technicians and DIY enthusiasts, this automotive scanner diagnostic tool optimizes vehicle performance and enhances the driving experience. Note: Not for all cars and modules, please send car VIN to check the compatibility before purchase
- OE All System Diagnostic & 8 Pids Graphing: XTOOL D7S is a comprehensive all system bi directional obd2 scanner that delivers dealer-level diagnostics, completely controlling over your vehicle’s performance and health. This automotive scan tool can read and clear DTCs, view live data and ECU information, retrieve freeze frames, and perform active tests and full obd2 functions. This bi-directional scan tool can can identify your vehicle's make, model, and year information with just one click and show up to 8 PIDs live data with options for CSV viewing, playback, and recording for in-depth analysis. It is easy-to-use for both professionals and beginners, helping pinpoint issues efficiently
- 3 Years Software Update, Value for Money: With 3 years of software updates and 22+ languages(no IP restrictions), XTOOL D7S auto scanner code scanner ensures ongoing compatibility for the latest car models and improved diagnostic functions. This all system vehicle diagnostic scanner comes with a 30-day return policy and a 24-month repair for dependable performance. XTOOL are dedicated to your satisfaction, so enjoy seamless support and lifetime expert assistance. Should you encounter any issues or concerns, don’t hesitate to reach out XTOOL. D7S with newest update with 22 languages freely transfer without authorization, check details from setting-language or from XTOOL
- 🔥 Historical lowest pr-ice now on sa-le--hot se-lling.
- 【🎈𝗜𝗙𝟳𝟰𝟱 𝗽𝗲𝗿𝗳𝗼𝗿𝗺𝘀 𝟲 𝗲𝘀𝘀𝗲𝗻𝘁𝗶𝗮𝗹 𝗿𝗲𝘀𝗲𝘁 𝗳𝘂𝗻𝗰𝘁𝗶𝗼𝗻𝘀—𝗔𝗕𝗦 𝗕𝗹𝗲𝗲𝗱𝗶𝗻𝗴, 𝗢𝗶𝗹 𝗥𝗲𝘀𝗲𝘁, 𝗘𝗣𝗕, 𝗦𝗔𝗦, 𝗧𝗵𝗿𝗼𝘁𝘁𝗹𝗲 𝗥𝗲𝗹𝗲𝗮𝗿𝗻, 𝗮𝗻𝗱 𝗕𝗠𝗦—𝗽𝘂𝘁𝘁𝗶𝗻𝗴 𝗽𝗿𝗼𝗳𝗲𝘀𝘀𝗶𝗼𝗻𝗮𝗹-𝗴𝗿𝗮𝗱𝗲 𝗺𝗮𝗶𝗻𝘁𝗲𝗻𝗮𝗻𝗰𝗲 𝗯𝗮𝗰𝗸 𝗶𝗻 𝘆𝗼𝘂𝗿 𝗵𝗮𝗻𝗱𝘀.】Spongy brakes? Stuck oil light? Parking brake won't release? Off-center steering? Rough idle after battery disconnect? Draining battery? IF745 handles all with a few taps. One tool covers six dealer-level resets, saving hundreds in labor costs. ❗ NOTE: Does NOT support bidirectional control, coding, or programming.
- 【✨ 𝗜𝗙𝟳𝟰𝟱 𝗴𝗼𝗲𝘀 𝗯𝗲𝘆𝗼𝗻𝗱 𝗯𝗮𝘀𝗶𝗰 𝗰𝗼𝗱𝗲 𝗿𝗲𝗮𝗱𝗶𝗻𝗴 𝘄𝗶𝘁𝗵 𝟭𝟬 𝗶𝗻𝘁𝗲𝗴𝗿𝗮𝘁𝗲𝗱 𝗳𝘂𝗻𝗰𝘁𝗶𝗼𝗻𝘀—𝗗𝗧𝗖 𝗟𝗼𝗼𝗸𝘂𝗽, 𝗜/𝗠 𝗥𝗲𝗮𝗱𝗶𝗻𝗲𝘀𝘀, 𝗙𝗿𝗲𝗲𝘇𝗲 𝗙𝗿𝗮𝗺𝗲, 𝗟𝗶𝘃𝗲 𝗗𝗮𝘁𝗮, 𝗢𝟮𝗦, 𝗢𝗕𝗠, 𝗘𝗩𝗔𝗣, 𝗮𝗻𝗱 𝗺𝗼𝗿𝗲. 】Pulling a code tells you something is wrong. IF745 tells you what the code means, when the fault happened, and what data surrounds it. Pass emissions with one I/M Readiness tap. Freeze the fault moment with Freeze Frame. Monitor live sensor data in real time. Turn cryptic codes into clear answers.
- 【🛒 𝗜𝗙𝟳𝟰𝟱 𝗽𝗲𝗿𝗳𝗼𝗿𝗺𝘀 𝗳𝘂𝗹𝗹-𝘀𝘆𝘀𝘁𝗲𝗺 𝗱𝗶𝗮𝗴𝗻𝗼𝘀𝘁𝗶𝗰𝘀 𝗮𝗰𝗿𝗼𝘀𝘀 𝗮𝗹𝗹 𝗺𝗼𝗱𝘂𝗹𝗲𝘀—𝗲𝗻𝗴𝗶𝗻𝗲, 𝗔𝗕𝗦, 𝗮𝗶𝗿𝗯𝗮𝗴, 𝘁𝗿𝗮𝗻𝘀𝗺𝗶𝘀𝘀𝗶𝗼𝗻, 𝘀𝘁𝗲𝗲𝗿𝗶𝗻𝗴, 𝘀𝘂𝘀𝗽𝗲𝗻𝘀𝗶𝗼𝗻, 𝗯𝗼𝗱𝘆 𝗲𝗹𝗲𝗰𝘁𝗿𝗼𝗻𝗶𝗰𝘀, 𝗮𝗻𝗱 𝗺𝗼𝗿𝗲. 】Warning lights on but you don't know why? Skip the $100+ diagnostic fee at the shop. Run a complete self-check from your driveway. IF745 reads and clears fault codes, retrieves ECU info, and displays live data from every accessible module—delivering a full vehicle health report in minutes, without leaving home.
- 【✅𝗜𝗙𝟳𝟰𝟱 𝗳𝗲𝗮𝘁𝘂𝗿𝗲𝘀 𝗮 𝟳-𝗶𝗻𝗰𝗵 𝗱𝗶𝘀𝗽𝗹𝗮𝘆, 𝗲𝗿𝗴𝗼𝗻𝗼𝗺𝗶𝗰 𝗱𝗲𝘀𝗶𝗴𝗻, 𝗪𝗶-𝗙𝗶 𝘂𝗽𝗱𝗮𝘁𝗲𝘀, 𝗮𝗻𝗱 𝘇𝗲𝗿𝗼 𝘀𝘂𝗯𝘀𝗰𝗿𝗶𝗽𝘁𝗶𝗼𝗻 𝗳𝗲𝗲𝘀 𝗳𝗼𝗿 𝗵𝗮𝘀𝘀𝗹𝗲-𝗳𝗿𝗲𝗲 𝗱𝗶𝗮𝗴𝗻𝗼𝘀𝘁𝗶𝗰𝘀.】Large screen means no squinting. Intuitive navigation and customizable data displays put key info at your fingertips. Wi-Fi delivers lifetime free updates without a computer. No recurring fees. No hidden costs. Just a reliable tool that works as hard as you do.
This product presentation was made with AAWP plugin.