P050ECold Start Engine Exhaust Temperature Too Low
- 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
- After a cold start the engine module raises idle speed and air mass and retards the ignition so that much heat goes into the exhaust and the catalyst lights off quickly. CARB requires this cold-start strategy to be monitored with its own codes, separate from ordinary idle and ignition faults. Ford collects data during the first 15 s after a cold start (coolant and catalyst 20–100 °F) and judges after 300 s, once per trip. P050E is the system check of the strategy: does enough heat reach the exhaust and catalyst? Ford uses no exhaust temperature sensor but a catalyst temperature model – actual against target – and sets the code when the temperature deficit divided by the target rise exceeds 0.4, with the warning lamp. FCA uses P050E on the 3.0-litre EcoDiesel (Ram 1500, Grand Cherokee 2014), where it concerns heating the oxidation catalyst, fixed by software. GM uses its manufacturer code P1400 instead.
- What you may notice
- Check engine light on
- Usually no change in driving
- Higher cold-start emissions
- Likely causes
- LikelyIdle or air control does not reach the cold-start target (dirty throttle, false air)
- PossibleIgnition not retarded enough (knock or torque intervention)
- PossibleEngine module software
- RareAir mass meter reading wrong
- 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: €0 – €400
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.