# Service bulletin 21\-01\-045H\-1

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: 10202182
- Published by NHTSA: 2021\-10\-08
- Manufacturer's number: 21\-01\-045H\-1
- Manufacturer's date: 2021\-09\-14
- NHTSA component: POWER TRAIN

## NHTSA's summary

Certain 2019MY Nexo vehicles may illuminate a check engine light due to a powertrain related DTC P1D3D94 \(Coolant Stack Pump – Motor or Internal Controller Malfunction\) resulting in reduced engine power due to cracking in the stack coolant pump rotor molding. This bulletin provides replacement procedures related to the stack coolant pump.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2021/MC-10202182-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2021/MC-10202182-9999.pdf)

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

## Components

Transmission and driveline

## Trouble codes named

P1D3D

## Vehicles listed

- 2019 HYUNDAI NEXO

## Other bulletins for the same vehicles and component

- [20\-AT\-016H](/bulletins/10174807.md), 2020-05-07, Service bulletin: POWER TRAIN; EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL; EQUIPMENT ADAPTIVE/MOBILITY. The automatic transmission warranty repair policy authorizes in\-dealership repairs of the following components for both OEM \(new\) and remanufactured automatic transmissions:
- [19\-FL\-003H](/bulletins/10160098.md), 2019-05-20, Service bulletin: POWER TRAIN; ELECTRICAL SYSTEM. This bulletin provides the procedure to write the Vehicle Identification Number \(VIN\) during the replacement of the Engine Control Module \(ECM\) or Powertrain Control Module \(PCM\). Once the VIN has been programmed to the ECM/PCM, it cannot be removed or overwritten.

JSON: [/v1/bulletins/10202182](/v1/bulletins/10202182)

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