P2D2DCold Start Intake Manifold Runner Performance Bank 1
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Matters for the ITP
- Needs a drive cycle to confirm a fix
- How the car detects it
- P2D2D reports that the intake manifold runner or swirl flaps of bank 1 did not reach the position the cold start strategy asked for. Many engines hold these flaps in a special setting after a cold start to stir the charge and stabilise combustion while the catalyst warms up. CARB names intake runner, charge motion and swirl valves among the features that must respond to their cold start command, robustly and beyond what they would do without the strategy. The outside-cold-start counterpart is P200A. Stellantis uses P2D2D on the 2020 Ram 1500 with the 3.0 l EcoDiesel Gen 3 and eight-speed automatic: bulletins 18-008-21 and 18-002-23 list it with P2D2E and remedy it with new PCM software. Beyond software, a stiff flap shaft, a carbon-coated runner or a weak actuator are typical reasons.
- What you may notice
- Check engine light, usually without a noticeable driving change
- Slightly rougher idle in the first minutes after a cold start
- P2D2E or P200A may be stored too
- Likely causes
- LikelyEngine control software that judges the cold start flap check too strictly
- PossibleFlap shaft or runner coated with soot and oil deposits, stiff when cold
- PossibleWorn actuator or loose linkage on bank 1
- RarePosition sensor signal or wiring fault
- Inspection (ITP)
- Matters for the ITP. While the check-engine light is on, the car fails the emissions check.
- Repair
- Medium · Usually a job for a workshop.Typical cost: €80 – €1,000
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.