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MANUFACTURER REFERENCE

Ram code references.

Explore documented code cases for the models, years and powertrains identified by the manufacturer.

Ram diagnostic guides

Find a guide by code

2019 Ram 1500 eTorque P0128: check the revision and all three modules

Check the later bulletin, companion faults and PCM/HCP/TCM completion before approving an eTorque repair.

These manufacturer documents cover specific vehicle conditions. Keep the complete scanner display and match the stated model, year and powertrain before using a case.

Browse the separate generic OBD-II reference

Model documentation

Only models identified by the cited manufacturer material are listed.

1500

2019

2500

2016

3500

2016

Documented code cases

Each document retains its own vehicle scope and complete code displays.

P0128 in a scoped eTorque software update

eTorque revision history.

Documented scope: 2019 · 3.6L eTorque ERG; DT

Displays: P0128

Check controller completion.

Use 18-070-22 scope.

Read the diagnostic case guide

Cummins update with corrected revision scope

The later revision removes P0401 from the listed update conditions.

Documented scope: 2016; North America · 6.7L I6 Cummins Turbo Diesel ETK; DJ/D2

Displays: P0128, P0300, P0301-00, P0302-00, P0303-00, P0304-00, P0305-00, P0306-00

Use revision A and diagnose unlisted faults separately.

The superseded July 9 version is not evidence for a P0401 software repair. RSU eligibility requires a VIN check.