# Service bulletin MAS003634

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

- Type: Service bulletin
- NHTSA id: 10239772
- Published by NHTSA: 2023\-07\-31
- Manufacturer's number: MAS003634
- Manufacturer's date: 2023\-06\-13
- NHTSA component: ELECTRICAL SYSTEM; BACK OVER PREVENTION; ENGINE AND ENGINE COOLING:ENGINE:ENGINE CONTROL MODULE \(ECU/ECM\):SOFTWARE; ENGINE AND ENGINE COOLING:ENGINE:ENGINE CONTROL MODULE \(ECU/ECM\)

## NHTSA's summary

Rapid Update 639 \- for the Engine Control Module software to enhace the detection strategy of the exhaust valve's angular position and prevents the improper triggering of DTCs P1217/P121B.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2023/MC-10239772-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2023/MC-10239772-9999.pdf)

The document is the manufacturer's. This site does not hold it.

## Components

Driver assistance, Electrical system, Engine, Backup camera, Engine control module

## Trouble codes named

P1217, P121B

## Vehicles listed

- 2022 MASERATI MC20

## Recalls for the same vehicles and component

- [25V098000](/recalls/nhtsa/25V098000.md), 2025-02-17: BACK OVER PREVENTION:SOFTWARE

## Other bulletins for the same vehicles and component

- [MAS003202](/bulletins/10217995.md), 2022-08-22, Service bulletin: BACK OVER PREVENTION; BACK OVER PREVENTION: AUTOMATIC SYSTEM BRAKING; ENGINE AND ENGINE COOLING. Technical Information \- Diagnose clicking noise from the carbon ceramic braking system.
- [MAS003188](/bulletins/10217991.md), 2022-08-22, Service bulletin: ELECTRICAL SYSTEM; POWER TRAIN; ENGINE AND ENGINE COOLING:ENGINE:ENGINE CONTROL MODULE \(ECU/ECM\):SOFTWARE. Service Campaign 522 \-to update the dual cltuch transmission module softa=ware release to update the dignosis calibration.
- [MAS003179](/bulletins/10217989.md), 2022-08-22, Service bulletin: BACK OVER PREVENTION; ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:MANIFOLD/HEADER/MUFFLER/TAIL PIPE. Service Campaign 518 \- to install the newly designed air intake sheilds on the lower rear bumper for the exhaust systems.
- [MAS003153A](/bulletins/10216572.md), 2022-08-01, Service bulletin: BACK OVER PREVENTION:SOFTWARE. Sevice Campaign 511 \- MC20 \- Updated software update to improve the performance of the engine calibration.
- [MAS003153](/bulletins/10216559.md), 2022-08-01, Service bulletin: BACK OVER PREVENTION:SOFTWARE. Sevice Campaign 511 \- MC20 \- Software update to improve the performance of the engine calibration.

JSON: [/v1/bulletins/10239772](/v1/bulletins/10239772)

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