MechanicDB
Fault Family System: Powertrain (P-Codes) 18 SAE Codes

AC Compressor Phase Current

Diagnostic & Technical Explanation
Code P0D7A sets when the electric A/C compressor's inverter phase-current sensors report a phase current missing, imbalanced, or exceeding the value commanded for present compressor speed. The most common physical causes are a corroded or loose phase-lead connection inside the compressor's integrated inverter housing, a damaged phase-current sensor, and a shorted or open turn in the compressor motor's winding. Because the compressor draws comparatively low current versus the drive motor or generator, a phase fault here more often traces to a winding or connector issue than to the high-current busbar damage seen on the larger traction motors.

These 18 diagnostic trouble codes share one detection mechanism and one repair path, which is why MechanicDB groups them into a single authored fault family rather than repeating the same explanation 18 times.

Codes in this family (18)

CodeDefinitionRepair coverage
P0D7AA/C Compressor Motor Phase U Current Low3 ranked fixes
P0D7BA/C Compressor Motor Phase U Current High3 ranked fixes
P0D7CA/C Compressor Motor Phase V Current Low3 ranked fixes
P0D7DA/C Compressor Motor Phase V Current High3 ranked fixes
P0D7EA/C Compressor Motor Phase W Current Low3 ranked fixes
P0D7FA/C Compressor Motor Phase W Current High3 ranked fixes
P0EB1A/C Compressor Motor Phase U Current Sensor Circuit3 ranked fixes
P0EB2A/C Compressor Motor Phase U Current Sensor Circuit High3 ranked fixes
P0EB3A/C Compressor Motor Phase U Current Sensor Circuit Low3 ranked fixes
P0EB4A/C Compressor Motor Phase U Current Sensor Range/Performance3 ranked fixes
P0EB5A/C Compressor Motor Phase V Current Sensor Circuit High3 ranked fixes
P0EB6A/C Compressor Motor Phase V Current Sensor Circuit Low3 ranked fixes
P0EB7A/C Compressor Motor Phase V Current Sensor Range/Performance3 ranked fixes
P0EB8A/C Compressor Motor Phase W Current Sensor Circuit High3 ranked fixes
P0EB9A/C Compressor Motor Phase W Current Sensor Circuit Low3 ranked fixes
P0EBAA/C Compressor Motor Phase W Current Sensor Range/Performace3 ranked fixes
P0EBBA/C Compressor Motor Phase V Current Sensor Circuit3 ranked fixes
P0EC0A/C Compressor Motor Phase W Current Sensor Circuit3 ranked fixes

What this page does not show

This page publishes the fault mechanism and the code index. The licensed dataset adds, for every one of the 15,886 codes, the full authored repair set (56,729 procedures in total) with the fields deliberately withheld here: