System: Powertrain (P-Code)
SAE Standard (Generic)
Family: Engine Disconnect Clutch Pressure Sensor
Code P28F5: Engine Disconnect Clutch Pressure Sensor Circuit Intermittent/Erratic
Diagnostic & Technical Explanation
Code P28F5 (Engine Disconnect Clutch Pressure Sensor Circuit Intermittent/Erratic) sets when the hybrid control module sees an open, shorted, implausible, or intermittent signal from the pressure sensor that confirms hydraulic apply pressure at the engine disconnect clutch. Because this sensor gates every transition between electric and hybrid driving, causes to check are a corroded connector at the transmission case, fluid contamination fouling the sensor port, and a failed sensor element.
First-listed procedure
Rank #1
Clean disconnect clutch sensor connector
Professional Required
This is the first procedure in the authored
consideration order, not a measured cause likelihood. Execute it only when its prerequisites
and diagnostic findings support it. Its cost and labor estimates (where known), the step-by-step procedure and the
remaining 2 procedure(s) are in the licensed dataset. Ordering context.
Full family: Engine Disconnect Clutch Pressure Sensor
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)