P1450 issue 2015 ecoboost pp

matthewt said:

I believe it is stock from 2015 as far as I know. Would that cause the fast build up when filling up gas?

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matthewt said:

it should be in the thread title but 2015 ecoboost performance pack

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matthewt said:

I reset, drove and experienced the same engine power issue, but have not got any new codes.

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Base Idle Reset Procedure for 2015 Ford Mustang EcoBoost​

1. Ensure Proper Conditions:
   • Park the vehicle in a safe, well-ventilated area with the transmission in Park (automatic) or Neutral (manual).
   • Ensure the engine is at normal operating temperature (drive the vehicle for 10–15 minutes if needed).
   • Turn off all accessories (radio, A/C, lights, etc.) to minimize load on the engine.
2. Battery Reset (Optional, if KAM Reset is Needed):
   • Disconnect the negative battery terminal to clear the PCM’s Keep Alive Memory (KAM), which stores idle and fuel trim data.
   • Leave the battery disconnected for 5–10 minutes (some sources suggest touching the positive and negative cables together briefly, away from the battery, to discharge residual voltage, but this is not always necessary).
   • Reconnect the battery (negative last) and proceed. Note: This step may require resetting clock, radio presets, and power windows.
3. Idle Relearn Process:
   • Start the engine and let it idle without touching the accelerator pedal.
   • Allow the engine to idle for 10–15 minutes at normal operating temperature with all accessories off. This helps the PCM relearn base idle settings.
   • After the initial idle period, turn on accessories (A/C, headlights, etc.) and let the engine idle for an additional 2–3 minutes to adapt to load conditions.
   • If equipped with an automatic transmission, place the vehicle in Drive (with the brake pedal pressed) for 1–2 minutes to allow the PCM to adjust for in-gear idle.
4. Driving Relearn:
   • Drive the vehicle for at least 10 miles at varying speeds (normal driving conditions, not aggressive) to allow the PCM to fully relearn fuel trims, throttle response, and shift points (if automatic).
   • Avoid abrupt throttle inputs during this period to ensure proper adaptation.
5. Battery Management System (BMS) Reset (if Battery Was Disconnected):
   • The 2015 Mustang EcoBoost has a BMS that monitors battery state. After battery reconnection, reset the BMS to prevent electrical issues:
     • Press the start button (without pressing the brake pedal) to enter accessory mode.
     • Within 10 seconds, flash the high beams 5 times, then press and release the brake pedal 3 times.
     • The battery warning light should flash 3 times to confirm the reset.
     • If the BMS reset fails, lock the car with the fob and let it sit for at least 8 hours.
   • Alternatively, letting the car sit for 8 hours after battery reconnection allows the BMS to recalibrate automatically.
6. Verify Idle Stability:
   • After the relearn process, check for smooth idle at approximately 650–850 RPM (exact RPM depends on modifications and tune).
   • If idle remains rough or erratic, inspect for vacuum leaks, dirty throttle body, or faulty sensors (e.g., MAF, TPS).

Additional Notes​

• Electronic Throttle Body (ETB) Calibration: The 2015 EcoBoost uses an ETB, which is controlled by the PCM and does not have a manually adjustable idle screw or traditional IAC valve. If idle issues persist, the ETB may need cleaning or calibration. A Ford-specific procedure (often outlined in service manuals or by FordTechMakuloco on YouTube) involves cycling the key and accelerator pedal to recalibrate the ETB:
  • Key on (engine off), slowly press the accelerator to the floor, release quickly, and turn the key off. Repeat 2–3 times, then start the engine.
• Common Issues: Rough idle after relearn could indicate a dirty ETB, faulty fuel vapor hose (part #FR3Z-9G297-H, a known EcoBoost issue), or tune-related problems. If the vehicle is tuned, consult the tuner (e.g., MPT, BAMA) for specific relearn steps, as custom tunes may alter idle parameters.
• TSB 15-0192: Some 2015 EcoBoost Mustangs (pre-May 2015 build) may experience smoking at idle due to a faulty crankcase vent oil separator. If this occurs, check if TSB 15-0192 applies and consider installing an oil catch can or the updated part.
• Tools Needed: No special tools are required for the basic relearn, but a scan tool (e.g., FORScan) can help monitor idle RPM and fuel trims. A TPMS reset tool may be needed if tire sensors are affected after battery disconnection.