# Service bulletin B20\-032

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: 10200851
- Published by NHTSA: 2021\-09\-02
- Manufacturer's number: B20\-032
- Manufacturer's date: 2021\-08\-30
- NHTSA component: POWER TRAIN; VEHICLE SPEED CONTROL

## NHTSA's summary

Service Bulletin \- The AWD indicator comes on with DTC C1843\-62 \(left rear differential fluid pressure deviation\) and/or DTC C1844\-62 \(right rear differential fluid pressure deviation\).

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2021/MC-10200851-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2021/MC-10200851-9999.pdf)

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

## Components

Throttle and cruise control, Transmission and driveline

## Trouble codes named

C1843, C1844

## Vehicles listed

- 2019 to 2021 ACURA RDX

## Recalls for the same vehicles and component

- [2021731](/recalls/tc/2021731.md), 2021-12-03: Powertrain
- [21V939000](/recalls/nhtsa/21V939000.md), 2021-12-02: POWER TRAIN:DRIVELINE:DRIVESHAFT

## Other bulletins for the same vehicles and component

- [B23\-010](/bulletins/10252481.md), 2024-04-03, Service bulletin: POWER TRAIN; POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE \(TCM/PCM/TECM\). Service Bulletin \- During engine start in cold conditions, a miscalculation in the PCM causes the air\-fuel ratio to exceed DTC rich criteria.
- [B21\-028](/bulletins/10203800.md), 2021-12-03, Service bulletin: ENGINE AND ENGINE COOLING; ELECTRICAL SYSTEM:SOFTWARE; POWER TRAIN. Service Bulletin \- The MIL comes on with DTC P061B \(PCM Internal Malfunction\) is stored.
- [B21\-028](/bulletins/10202909.md), 2021-11-03, Service bulletin: POWER TRAIN; ENGINE AND ENGINE COOLING. Service Bulletin \- The MIL comes on with DTC P061B \(PCM Internal Malfunction\) is stored.
- [B21\-028](/bulletins/10201209.md), 2021-09-09, Service bulletin: ENGINE AND ENGINE COOLING; POWER TRAIN. Service Bulletin \- The MIL comes on with DTC P061B \(PCM Internal Malfunction\) is stored.
- [B21\-028](/bulletins/10200367.md), 2021-08-13, Service bulletin: ENGINE AND ENGINE COOLING; POWER TRAIN. Service Bulletin \- The MIL comes on with DTC P061B \(PCM Internal Malfunction\) is stored.
- [B21\-021](/bulletins/10196882.md), 2021-06-11, Service bulletin: POWER TRAIN. Service Bulletin \- The MIL comes on with DTC P0236 \(Turbocharger Boost Sensor Circuit Range/Performance Problem\) stored.
- [B20\-032](/bulletins/10189904.md), 2021-04-05, Service bulletin: POWER TRAIN; VEHICLE SPEED CONTROL. Service Bulletin \- The AWD indicator comes on with DTC C1843\-62 \(left rear differential fluid pressure deviation\) and/or DTC C1844\-62 \(right rear differential fluid pressure deviation\).
- [B18\-045](/bulletins/10145033.md), 2018-10-01, Service bulletin: ELECTRICAL SYSTEM:SOFTWARE; ELECTRICAL SYSTEM; POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE \(TCM/PCM/TECM\). Service bulletin \- Some troubleshooting procedures for a loss of communication or F\-CAN malfunction DTC?s require running the F\-CAN Bus Connected Unit Check using the i\-HDS. There are certain control units that may be reported as Not Available in the Status column even though they are properly communicating.

JSON: [/v1/bulletins/10200851](/v1/bulletins/10200851)

[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%20B20-032&page=https%3A%2F%2Fopen.wenmarpro.com%2Fbulletins%2F10200851&vehicle=Service%20bulletin%20B20-032)