NHTSA ID Number: 11031362
Manufacturer Communication Number: MAS005093 DS 26-05
TSB/Document Date: 2026-04-17
Summary
This diagnosis sheet is issued to provide guidance for the correct troubleshooting of MC20 transmission anomalies and the newly available lower‑level repair options. Gearbox diagnosis
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)
- CUTTING EDGE TECHNOLOGY - Shockproof technology designed to...
- QUIET SMOOTH SHIFTING - V-Twin Transmission oil dampens...
- IMPROVES PERFORMANCE - Transmission fluid that dramatically...
- POPULAR POWESPORTS OIL FOR - UTVs & Side by Sides, ATVs...
- WHY RED LINE - Established in 1979, Red Line Products...
This product presentation was made with AAWP plugin.
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: MAS005093 DS 26-05
Replacement Service Bulletin Number:
MFR Communication Date: 2026-04-09
MFR Internal Campaign ID/Software Version:
Communication Type: Other
NHTSA Components: STEERING
MFR Component System:
MFR Component Subsystem:
Previous TSB | Next TSB |
Diagnostic Sheet
FROM: Maserati
TSO
TO: Maserati Network
MC20 – Gearbox diagnosis and repairability
IMPORTANT NOTICE This bulletin supersedes MAS004558 DS 25-03 released on February 4, 2025.
It includes updated information. Please discard all previous versions.
DATE: April 9, 2026
This diagnosis sheet is issued to provide guidance for the correct troubleshooting of MC20 transmission
anomalies and the newly available lower‑level repair options.
Maserati has also introduced, via MDEVO, a new procedure called DCTM Service Fast Learn. This routine can be
used to resolve issues related to hydraulic valve sticking and performs a bleed cycle and relearn to address
pressure‑related problems.
SECTION: 03.10-1 (GEARBOX).
MODEL: M240 MC20 & MC20 Cielo from MY22+ (for MY22, DCTM Service Fast Learn is only available after
updating the DCTM SW version. Additional details in section 1.1).
DESCRIPTION OF THE ISSUE: Transmission warning light on, with one or more of the following DTCs stored in
the DCTM:
DTC Type
DTC Code
1
P0746
Pressure Control Solenoid "A" Performance/Stuck Off
1
1
1
1
1
P0747
P0776
P0777
P0796
Pressure Control Solenoid "A" Stuck On
Pressure Control Solenoid "B" Performance/Stuck Off
Pressure Control Solenoid "B" Stuck On
Pressure Control Solenoid "C" Performance/Stuck Off
P0797
P080E
P0867
P0868
P0869
P2714
Pressure Control Solenoid "C" Stuck On
Transmission System Pressure Relief Valve Performance
Transmission Fluid Pressure
Transmission Fluid Pressure Low
Transmission Fluid Pressure High
Pressure Control Solenoid "D" Performance/Stuck Off
P2715
P2723
P2724
P2808
P2809
P2817
Pressure Control Solenoid "D" Stuck On
Pressure Control Solenoid "E" Performance/Stuck Off
Pressure Control Solenoid "E" Stuck On
Pressure Control Solenoid "G" Performance/Stuck Off
Pressure Control Solenoid "G" Stuck On
Pressure Control Solenoid "H" Performance/Stuck Off
P2818
P2853
Pressure Control Solenoid "H" Stuck On
Clutch "A" Pressure Discharge Performance
1
1
1
1
1
1
1
1
1
1
1
1
1
© 2026 Maserati North
America. Aftersales
www.maseratiusa.com
DTC naming
MAS005093
All rights reserved. Reproduction or translation in
whole or in part is not permitted without
authorization from the publisher. Printed in USA
Page 1 of 4
TECHNICAL SERVICE OPERATIONS
MAS005093 DS 26-05
1
1
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
© 2026 Maserati North
America. Aftersales
www.maseratiusa.com
P2854
P2855
Clutch "B" Pressure Discharge Performance
Clutch "A" Pressure Charge Performance
P2856
P2A18
P2A19
P07E4
P07E6
P2820
Clutch "B" Pressure Charge Performance
Limited Slip Differential Pressure Too High
Limited Slip Differential Pressure Too Low
Unable to Engage Park
Stuck in Park
Pressure Control Solenoid "J" Performance/Stuck Off
P2821
P08C4
P08C5
P27B9
P27BA
P27C1
Pressure Control Solenoid "J" Stuck On
Pressure Control Solenoid "M" Performance/Stuck Off
Pressure Control Solenoid "M" Stuck On
Pressure Control Solenoid "N" Performance/Stuck Off
Pressure Control Solenoid "N" Stuck On
Pressure Control Solenoid "P" Performance/Stuck Off
P27C2
P27C9
P27CA
P27D1
P27D2
P2829
Pressure Control Solenoid "P" Stuck On
Pressure Control Solenoid "R" Performance/Stuck Off
Pressure Control Solenoid "R" Stuck On
Pressure Control Solenoid "S" Performance/Stuck Off
Pressure Control Solenoid "S" Stuck On
Pressure Control Solenoid "K" Performance/Stuck Off
P282A
P284D
P284E
P284F
P2850
P286A
Pressure Control Solenoid "K" Stuck On
Shift Fork "A" Unrequested Movement
Shift Fork "B" Unrequested Movement
Shift Fork "C" Unrequested Movement
Shift Fork "D" Unrequested Movement
Shift Fork "E" Unrequested Movement
P072B
P072C
P072D
P072E
P072F
P073A
Stuck In Reverse
Stuck in Gear 1
Stuck in Gear 2
Stuck in Gear 3
Stuck in Gear 4
Stuck in Gear 5
P073B
P073C
P073E
P073F
P074A
P074B
Stuck in Gear 6
Stuck in Gear 7
Unable to Engage Reverse
Unable to Engage Gear 1
Unable To Engage Gear 2
Unable To Engage Gear 3
P074C
P074D
P074E
P074F
P07D7
P07D8
Unable To Engage Gear 4
Unable To Engage Gear 5
Unable To Engage Gear 6
Unable To Engage Gear 7
Stuck in Gear 8
Unable To Engage Gear 8
P1CAD
P1CAE
P1CAF
P1CB1
P1CB2
P1CB3
Gear Shift Actuator 1 Disengage Failure
Gear Shift Actuator 2 Disengage Failure
Gear Shift Actuator 3 Disengage Failure
Gear Shift Actuator 1 Engage Failure
Gear Shift Actuator 2 Engage Failure
Gear Shift Actuator 3 Engage Failure
MAS005093
All rights reserved. Reproduction or translation in
whole or in part is not permitted without
authorization from the publisher. Printed in USA
TECHNICAL SERVICE OPERATIONS
1
1
1
Page 2 of 4
1.
Read the DTCs stored in the DCTM and verify they are included in the table above. For MY22 vehicles proceed to
step 1.1, for all others begin at 1.2.
1.1. MY22 vehicles only: Using the diagnostic tool, check that the value of Variable F188 in the DCTM is included
in Table “A”:
F188
SW Part Number
eLSD
673017235
Table A
mLSD
673017237
eLSD Low Drag
673017236
•
If present, proceed to step 1.2.
•
If not present, check if it is included in Table “B”:
Table B
F188
eLSD
mLSD
eLSD Low Drag
SW Part Number
670217669 or 673014262
670222484 or 670296739
670292950 or 670296738
o
If present, update the DCTM ECU software and, after the update, verify that the SW version
matches Table “A”; then proceed to 1.2.
o
If not present, the routine cannot be applied due to technical limitations related to the
DCTM SW version.
1.2. Using the diagnostic tool, launch the “DCTM Service Fast Learn” procedure from the DCTM.
2.
Road test the vehicle and check whether the reported issue and related DTCs can be reproduced:
2.1. If NO: Replace the transmission oil and oil filter (item #23 in Section #03.10-1 of the Parts Catalogue), then
perform an additional road test. If successful, the vehicle can be released.
2.2. If YES: Recheck the DTCs stored in the DCTM:
2.2.1. If the DTC is classified as Type 1 (according to the table above): The mechatronic unit may be defective;
refer to the handling procedure for components listed under Tutorship.
2.2.2. If the DTC is classified as Type 2 (according to the table above): Start the engine and, as soon as
parameter 1F3D – Transmission Sump Oil Temperature Read in the DCTM exceeds 80°C, record and
save a log acquisition of the following DCTM parameters with engine idling, transmission in P, and
without pressing the brake:
➔ 1F35 - System Pressure Sensor Raw with Zero Correction
➔ 1EFA - System Pressure Sensor Raw
➔ 1F37 - System Pressure Target
Acquisition duration: 5 minutes.
Sampling time: 100 ms.
NOTE: System pressure should remain between 20 and 30 bar when the engine is running or the vehicle is
being driven; commanded pressure will vary within this range based on torque demand. For diagnostic
purposes, it is essential to check for pressure oscillations or frequent drops below 5 bar, which indicate that
the system pressure control valve is struggling to maintain stable pressure.
•
If pressure is stable, it is likely that the complete transmission must be replaced; refer to the handling
procedure for components listed under Tutorship.
•
If pressure is unstable, refer back to Step 2.2.1.
© 2026 Maserati North
America. Aftersales
www.maseratiusa.com
MAS005093
All rights reserved. Reproduction or translation in
whole or in part is not permitted without
authorization from the publisher. Printed in USA
Page 3 of 4
TECHNICAL SERVICE OPERATIONS
REPAIR PROCEDURE
TECHNICAL SERVICE OPERATIONS
Warranty Claim Information:
Description
Defect Code
Component Code
Operation Code
• OBD/EOBD Check
• DCTM SW Update (if required)
• DCTM Self Fast Learn
• Vehicle Road Test
• Transmission Oil Filter Cartridge (if required)
Code
25 – Non‑Functioning – Failure
3.10.060 (Complete Automatic Transmission)
0.20.013.0 (0.20h)
3.10.147.9 (0.20h)
3.10.147.G (0.25h)
0.20.001.1 (0.25h)
3.10.157.0 (0.30h)
Any warranty repairs must include evidence of the steps listed above, attaching them to the relevant Blue on Line case
(if required per current Blue on Line Policies) or to the warranty claim, following guidelines per TDA-01.
We remain available for any further clarification.
Kind regards
TECHNICAL SERVICE OPERATIONS
© 2026 Maserati North
America. Aftersales
www.maseratiusa.com
MAS005093
All rights reserved. Reproduction or translation in
whole or in part is not permitted without
authorization from the publisher. Printed in USA
Page 4 of 4
- 🎉[OTOFIX D1 Lite, Perfect Cost-effective Diagnostic Tool]: OTOFIX D1 Lite, a newest bidirectional scan tool from OTOFIX company, is a great choice for DIYers and repair shops. 👉This obd2 scanner diagnostic tool packs all practical functions: OE level all systems diagnoses, Bi-Directional Control, 38+ reset services fixing 99% of common problems, support DoIP & CANDF protocols and FCA
AutoAuth, high-end hardware configuration. Worldwide vehicles and 🔥2 Years Free Updating🔥 covered. - 🎉[Bi-Directional Scan Tool, Active Test]: OTOFIX D1 Lite bluetooth obd2 scanner can also command ECUs and monitor the operation of the actuators to track down the problems of certain parts, like windows, sunroof, wipers, fuel pumps, etc., saving repair time & trouble. This makes OTOFIX D1 Lite the most cost-effective bidirectional scan tool.
- 🎉[2026 Newest, 38+ Hot Reset Functions]: Equipped with 38+ reset functions in one, the OTOFIX D1 lite automotive scanner diagnostic tool allows you to troubleshoot 99% of common vehicle problems. You can use this car diagnostic scanner holding enough functions to easily repair common vehicle models in your repair shops. Including Oil Reset, Injector Coding, Throttle, DPF Reset, SCR Reset, Gear Learning, Clutch Learning, Suspension, etc. Note* Reset functions vary by model.
- 🎉[OE Level Full Systems Diagnostics]: Unlike the 2-system and 4-system diagnostic tools, the OTOFIX auto scan tool can complete comprehensive system diagnostics within 5 minutes. It accesses and scans all available onboard systems like for Engine /AT /ABS /EPB /BMS /TPMS /SRS /SAS /Audio System /BCM /Air Conditioning / etc., to read & clear codes, view live data, and check ECU information. Note: Active test is not involved.
- 🎉[Powerful Hardware Configuration]: Designed with a fashion appearance & a 7” touchscreen and a weight of 463g, this OTOFIX D1 Lite OBD2 diagnostic scanner scan tool is convenient for everywhere and easy to use & store. Android9.0 OS and 2+64GB memory enhance multi-task smoothness and diagnostic operation, no more wasting too much time. 5800mAh battery allows hours-lasting use. WiFi & VCI1 also bring faster communication for your diagnostics.
- 🏆【2026 TOP OBD2 Scanner Diagnostic Tool】OTOFIX D1 Lite wireless obd2 scanner has upgraded hardware configuration and car coverage. The newly upgraded D1 Lite with 🔥OS Android 9.0🔥1.5Ghz 4 core high efficiency processor🔥2GB RAM+64GB ROM large storage🔥5800mAh large battery, more stable and longer lasting diagnostics🔥 38+ Reset🔥action tests🔥full system diagnostic🔥Supports MV105 endoscope🔥21+ Language Supports🔥100000+ vehicle coverage to meet all your daily maintenance needs.
- 👍【Bi-Directional Control / Active Test】D1 Lite obd2 scanner has bidirectional control(worth $300+), which is the most beloved feature among mechanic. If your headlights or car windows are broken, going to a repair shop will cost a lot of money. You can use D1 Lite to send execution commands to the ECU module and identify the repair status. Such as ABS, car windows, doors, valves, wipers, headlights, etc., effectively shorten diagnostic time and reduce diagnostic costs.
- 🔥【All Systems Diagnostics, In-depth Checking】This advanced OBD2 Scanner D1 Lite can perform OE-level diagnosis of all systems including engine, transmission, airbag, ABS, ESP, TPMS, gateway, steering, radio, and air conditioning for more than 100 brands. This diagnostic scanner supports essential functions, such as reading ECU version info, reading and clearing fault codes, and reading data streams.With just a simple click, it provides you with accurate and in-depth diagnostics.
- 🏆【38+ Reset Hot Functions】For repair workshops, holding an OTOFIX D1 Lite Auto scanner is a strong advantage over others. Its 38+ maintenance functions provide various solutions for all module repairs, including Oil Reset, TPMS Reset, Injector Coding, Suspension, Throttle Matching, etc., which will usher your repair business to a new pinnacle. Continuously updating will never make the functionality & compatibility out-of-date.
- 🏆【150+ Models, 10000+ Car Coverage & 16 Languages】D1 Lite is a comprehensive car diagnostic scan tool, help you to troubleshoot car issues fast for 95% US, European, Asian auto makes. ✅ With frequent updates and optimizations allow D1 Lite to cover more vehicles to meet your needs. ✅ Multilingual menu allows auto mechanics around the world to use it without language barriers. 🚩Note: Kindly send us the S/N of the device to authorize new language updates before changing the menu language.
- 【2026 OTOFIX D1 Lite Gives the Best Value for Money】OTOFIX D1 Lite bidirectional scan tool is more FASTER and SMARTER with 2026 Enhanced Hardwares & New Functions! 👍Alternative Bluetooth +USB connect 👍2G+64GB 👍4x ARM Cortex-A35 (1.5GHz) Processor (5X Faster CPU) 👍Android 9.0 OS 👍5G GHz WiFi 👍CANFD&DOIP 👍 FCA AutoAuth 👍38+ Services 👍3K+ Bi-Directional Control 👍Full Systems Diagnose 👍2 Years Update 👍150+ Vehicle Coverage.
- 👍【Active Tests】 OTOFIX D1 Lite is a bi-directional scan tool that can send commands to, and also receive information from vehicle control modules. This way, you can quickly locate and repair faulty auto parts. For Example: send direct commands to ask the vehicle to turn on/off the radiator fan, lights, sound horn, fuel pump, modulate throttle, open/close windows, operate mirrors and more. *Note that only available tests will be displayed in the menu.
- 👍【38+ Service Functions】 OTOFIX D1 Lite scan tool offers 38+ of the hottest service functions that are commonly used for car repairs. That include Oil reset/SAS/EPB/BMS/Throttle/ABS bleeding, and 2065-new SUS/ADBLUE/NOX/Headlamp resets (and more) to help restore your car status after repairs are done. Compared to other diagnostic scanners for cars, the OTOFIX D1 Lite scanner is much more fully-featured. *Note that specific functions available depend on the make/model/year of your car.
- 👍【All System Diagnostics + Cloud Report Management】 This 2026 car scanner OTOFIX D1 Lite provides troubleshooting and data for all ECUs: read/clear DTCs, view graphic live data/VIN, and locate system faults for safe driving. With Cloud Report Management, you can save detailed reports to cloud servers and easily shared them with others via QR codes/emails/text messages. Others can access these reports from any device (smartphones/tablets/PCs …) anytime, and you can better manage repair work.
- 👍【99% Car Coverage】 This one-station car scanner diagnostic for all cars works on 150+ major car brands across the world. 1) It supports CAN-FD/DoIP protocols: compatible with GMCAVALIER/TRAX/Encore/Envision/GL8(LSY)/CT4/CT5 after 2019; Volvo after 2018; Land Rover/Jaguar after 2017; and BM.W F/G all chassis. 2) For models equipped with security modules (such as Renault & 2018+ FCA SGW), its built-in AutoAuth allows you to easily break diagnostic barriers after registration.
This product presentation was made with AAWP plugin.
Last update on 2026-05-12 / Affiliate links / Images from Amazon Product Advertising API