# Service bulletin 0900421

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: 10223370
- Published by NHTSA: 2022\-10\-17
- Manufacturer's number: 0900421
- Manufacturer's date: 2021\-05\-27
- NHTSA component: ENGINE AND ENGINE COOLING

## NHTSA's summary

Oil Control Valve Connector Not Seated This bulletin involves inspecting the oil control valve connector and possibly seating the connector. Customers may experience a Malfunction Indicator Lamp \(MIL\) illumination. Upon further investigation the technician may find the following Diagnostic Trouble Code \(DTC\) has been set: P0013 \- Bank 1 Camshaft 2 Position Actuator Circuit Open.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2021/MC-10223370-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2021/MC-10223370-9999.pdf)

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

## Components

Engine

## Trouble codes named

P0013

## Vehicles listed

- 2021 RAM 1500
- 2021 RAM 2500
- 2021 RAM 3500
- 2021 RAM 4500
- 2021 RAM 5500

## Recalls for the same vehicles and component

- [2023221](/recalls/tc/2023221.md), 2023-04-13: Engine
- [2022584](/recalls/tc/2022584.md), 2022-10-14: Engine
- [22V767000](/recalls/nhtsa/22V767000.md), 2022-10-13: ENGINE; FUEL SYSTEM, GASOLINE:DELIVERY:FUEL PUMP

## Other bulletins for the same vehicles and component

- [9100898](/bulletins/11037347.md), 2026-09-17, Service bulletin: ENGINE. Engine PNs: MY 24\-26 WD/DT \(5.7L\) Code P00B is being misdiagnosed and incorrect parts are being installed causing over repair. Refer to SOL S2609000006 The IAFM Foam Engine Valley Cover \(PN 53013735AB\) does not provide sufficient clearance for proper routing of the MDS solenoid jumper harness \(PN 05148163AE\). As a result, the harness may become compressed by the foam cover. To prevent unnecessary part replacement, the MDS solenoid jumper harness \(PN 05148163AE\) should be inspected for damage or pinch conditions prior to replacing the following part numbers: Engine PNs: 68409343AA 68409357AA 68450915AA OCV PNs: 53022338AB Phaser PNs: 53022298AA 53022298AB
- [114254](/bulletins/11036754.md), 2026-09-03, Service bulletin: ENGINE. RADIATOR \- ENGINE COOLING
- [114255](/bulletins/11036753.md), 2026-09-03, Service bulletin: ENGINE. RADIATOR \- ENGINE COOLING
- [113744](/bulletins/11035981.md), 2026-08-06, Service bulletin: ENGINE; ELECTRICAL SYSTEM. SENSOR \- TURBOCHARGER SPEED
- [113742](/bulletins/11035980.md), 2026-08-06, Service bulletin: ENGINE; ELECTRICAL SYSTEM. SENSOR \- TURBOCHARGER SPEED
- [112906](/bulletins/11034373.md), 2026-07-02, Service bulletin: ENGINE. BEARING \- CRANKSHAFT THRUST and KIT
- [S2609000009](/bulletins/11034345.md), 2026-07-02, Service bulletin: ENGINE. Check Engine Light \(CEL\) Illuminated with Diagnostic Trouble Code \(DTC\) P0106 Manifold Absolute Pressure Sensor Performance Setting In The Powertrain Control Module \(PCM\)
- [112906](/bulletins/11034337.md), 2026-07-02, Service bulletin: ENGINE. BEARING \- CRANKSHAFT THRUST and KIT
- [9100839](/bulletins/11033961.md), 2026-06-18, Service bulletin: ENGINE. 3\-way valves are available in STAR Parts as two distinct components and must be selected correctly based on application. The High Temp 3\-way valve \(68309834AC\) is located between the engine and the bulkhead at the rear of the engine compartment. The Low Temp 3\-way valve \(68448241AA\) is located between the engine and the radiator at the front of the engine. When ordering or servicing, ensure the correct valve is identified and installed in the proper location, as incorrect part selection may lead to improper thermal system operation and repeat repairs.
- [9100692 Rev 1](/bulletins/11033001.md), 2026-05-28, Service bulletin: ENGINE. On Cummins diesel applications that are for 2019 and newer the bpro part 1BP00507AB can on occasions create a check engine light. In these situations, it is recommended to use the appropriate Mopar air filter originally installed on the vehicle. The "AC" level of the part is in development to resolve this issue. 1BP00507AB should still be usable for 2018 and older Model year Cummins engines.

JSON: [/v1/bulletins/10223370](/v1/bulletins/10223370)

[Report an error on this page](https://github.com/wenmar-pro/wenmar-open/issues/new?template=data_correction.yml&title=Data%20correction%3A%20Service%20bulletin%200900421&page=https%3A%2F%2Fopen.wenmarpro.com%2Fbulletins%2F10223370&vehicle=Service%20bulletin%200900421)