Diagnostic article Generic OBD-II
P0D7F: phase-W current-high is distinct from total compressor load
GM P0D7F checks phase-W current feedback with zero speed requested and records a signed-signal ambiguity that must be resolved for the actual controller.
Read before applying this article
Documented application
GM 2015 15OBDG01 Hybrid Diagnostics, only the cited EACCM monitor and calibration. Per-code vehicle and engine applicability has not been established; these historical thresholds are not universal service specifications.
The code alone does not identify a failed part or establish that a vehicle is safe to drive. Confirm the vehicle, reporting module and applicable service procedure.
P0D7F belongs to the phase-W feedback diagnostics of the electric A/C compressor in this GM document. Its high designation should not be expanded into a conclusion that the total compressor load was excessive. The monitor examines a particular phase signal in a stopped-command state.
Preserve the original comparison's limits
The table associates this high-labelled code with a negative signed-current boundary. The document alone does not establish how that internal sign maps to a physical current measurement. This article therefore omits an external amperage test and flags the numerical interpretation for calibration-specific review.
The failure evaluation requires zero requested compressor speed, sufficient low-voltage supply and Accessory or Run/Crank. It counts 30 failures out of 60 samples at a 50-millisecond interval. Those conditions distinguish it from a DC-link current check made during a running request.
Verify the right event after diagnosis
Record phase-W feedback and the request state from the original event. The source also records a controller-reset prerequisite for enabling the pass branch after failure. That is a recovery condition, not a prescribed repair or proof of healthy hardware.
The table does not identify a damaged winding or mandate compressor replacement. A qualified technician must use the exact vehicle procedure to establish signal mapping, measurement validity and component condition. No instructions for opening the high-voltage assembly, disconnecting phase leads or handling refrigerant are provided by this monitor explanation.
Source and applicability
GM 2015 15OBDG01 Hybrid Diagnostics, only the cited EACCM monitor and calibration. Per-code vehicle and engine applicability has not been established; these historical thresholds are not universal service specifications.
Article source documents
Source checks describe how the text was prepared; they do not certify a diagnosis or confirm compatibility with every vehicle using this code.
Original code reference
Dictionary definition
A/C Compressor Motor Phase W Current High
This definition retains its original catalog scope. The article above is limited to its explicitly documented application.
Reference scope
Generic OBD-II definition.
A manufacturer label does not establish the model, year, engine or module to which a diagnosis applies. Read the safety and diagnostic limits.
Definition source
- DTC Database: pinned community code definitions
Source checked · MIT