Fault Family
System: Powertrain (P-Codes)
2 SAE Codes
AC Compressor Motor Performance
Diagnostic & Technical Explanation
Code P2D29 (A/C Compressor Motor Stalled) sets when the electric A/C compressor's motor is stalled or is not achieving the rotational performance its commanded speed calls for, apart from any voltage-sensor circuit fault. A seized compressor due to internal mechanical failure, insufficient refrigerant/oil lubrication starving the motor, or a failed drive-stage component inside the compressor's integrated inverter are the common causes.
These 2 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 2 times.
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:
- Procedures 2..n after the first-listed procedure
- Aftermarket parts cost ranges in USD (
est_parts_cost_min/max_usd)
- Professional labor-hour estimates (
est_labor_hours)
- Step-by-step diagnostic and repair instructions
- Replacement-part mappings and catalog lookups
- 6,637 manufacturer-specific OEM codes across 32 makes ($149 tier)