P2D28
Cold Start Propulsion Torque Performance
During cold start, the propulsion torque output does not match the calibrated cold-start torque profile. Cold engine response, hybrid blend, or torque modelling deviates from expected.
- Check engine light: Yes
- Emissions related: Yes
- Repair difficulty: medium
Common causes
Ordered by how often each turns out to be the cause.
- Increased cold-engine drag torqueCommon
- Hybrid blend strategy off-targetPossible
Parts involved
- ECM
- Engine
- Hybrid Drivetrain
P2D28 is a generic OBD-II code defined by SAE J2012. Exact wording and diagnostic procedure vary by manufacturer and model. Code definitions are drawn from the public-domain OBDex dataset; the workshop notes are our own.