2017 Escape EcoBoost - Turbo Underboost

[josh.knighton]

Hey everyone. This is my first post/fresh user here so go easy.
I'm looking at a 2017 escape that had reportedly no power under acceleration.
Throwing a P0299 code. Any Help is greatly appreciated!

Here's the snapshot:
===PCM DTC P0299:00-64===
Code: P0299 - Turbocharger/Supercharger 'A' Underboost Condition

Status (-64):
- DTC Maturing - Intermittent at Time of Request
- Malfunction Indicator Lamp is Off for this DTC
- Test not complete

Module: Powertrain Control Module

Freeze Frame #1:

Freeze Frame #2:
-EVENT_TIME: 250072883 s (Mon Sep 09 00:08:47 2024) - Event time
-TOTAL_DISTANCE: 217135 km - Total Distance
-FUELSYS: Closed Loop - Fuel System Status (Open/Closed Loop)
-LOAD: 32.55 % - Calculated Load Value
-ECT: 87 °C - Engine coolant temperature
-SHRTFT1: -3.13 % - Short term fuel trim 1
-LONGFT1: -5.47 % - Long term fuel trim 1
-MAP: 84.0 kPa - Manifold absolute pressure sensor
-RPM: 3118 1/min - Engine Revolutions Per Minute
-VSS: 85.0 km/h - Vehicle Speed
-SPARKADV: 29.50 ° - Spark Advance
-IAT: 25 °C - Intake Air Temperature
-RUNTM: 335 s - Time Since Engine Start
-FRP: 11070.0 kPa - Fuel Rail Pressure
-EVAP_PCT: 89.02 % - Commanded Evaporative Purge
-FLI: 46.27 % - Fuel Level
-BARO: 89.0 kPa - Barometric pressure
-VPWR: 13.73 V - Control Module Voltage
-TP_REL: 76.86 % - Relative Throttle Position
-RPMDSD: 790 1/min - Desired Idle Speed RPM
-O2S12: 0.79 V - Heated Exhaust Gas Oxygen Sensor (bank 1, sensor 2)
-TQ_CNTRL: None Requested - Torque Control Requested
-ENGOFF_TIMER: 14740 s - Timer since Engine Off
-APP_FLT: No Fault - Accelerator Pedal Position Sensor Status
-ECT_F: No Fault - Engine Coolant Temperature Status
-IAT_F: No Fault - Inlet Air Temperature Sensor Status
-ETC_TRIM_LRN: Yes - Throttle Angle Offset has Learned
-MISFIRE: No - Engine Misfire currently detected
-TP_F: No Fault - Throttle Position Sensor Status
-MP_LRN: Yes - Misfire Profile Correction Learned
-MAF_F: No Fault - Mass Air Flow Sensor Status
-MAP_F: No Fault - Manifold Absolute Pressure Sensor Status
-OTS_STAT: Enabled - One-Touch Start Status
-SMC_MON: Off - Starter Motor Control Output Detected
-APP1: 2.48 V - Accelerator pedal position sensor 1
-APP2: 1.25 V - Accelerator pedal position sensor 2
-TP1: 0.69 V - Throttle Position Sensor 1
-TP2: 4.30 V - Throttle Position Sensor 2
-GEAR: 4 - Gear Commanded
-GEAR_OSC: 4 - Gear Command by Output State Control
-TSS_SRC: 3118 1/min - Actual Turbine Shaft Speed
-OSS_SRC: 2156 1/min - Actual Output Shaft Speed
-TFT: 59 °C - Transmission Fluid Temperature
-TR: Drive/OverDrive - Transmission range
===END PCM DTC P0299:00-64===

===OBDII DTC P0299-P===
Code: P0299 - Turbocharger/Supercharger 'A' Underboost Condition

Status (-50):
- Pending - malfunction is expected to be confirmed

Module: On Board Diagnostic II

===END OBDII DTC P0299-P===

===APIM DTC None===
Successful DTC reading, no error codes found

Module: Accessory Protocol Interface Module

===END APIM DTC None===

===SASM DTC None===
Successful DTC reading, no error codes found

Module: Steering Angle Sensor Module

===END SASM DTC None===

===OCS DTC None===
Successful DTC reading, no error codes found

Module: Occupant Classification System Module

===END OCS DTC None===

===ABS DTC None===
Successful DTC reading, no error codes found

Module: Antilock braking system

===END ABS DTC None===

===RCM DTC None===
Successful DTC reading, no error codes found

Module: Restraint Control Module

===END RCM DTC None===

===PSCM DTC None===
Successful DTC reading, no error codes found

Module: Power Steering Control Module

===END PSCM DTC None===

===BdyCM DTC None===
Successful DTC reading, no error codes found

Module: Body Control Module

===END BdyCM DTC None===

===FCDIM DTC B10BD:13-08===
Code: B10BD - Multifunctional Switch

Additional Fault Symptom (:13):
- Circuit Open

Status (-08):
- Previously Set DTC - Not Present at Time of Request
- Malfunction Indicator Lamp is Off for this DTC

Module: Front Control/Display Interface Module

===END FCDIM DTC B10BD:13-08===

===HVAC DTC None===
Successful DTC reading, no error codes found

Module: Heating Ventilation Air Conditioning

===END HVAC DTC None===

===ACM DTC None===
Successful DTC reading, no error codes found

Module: Audio Control Module

===END ACM DTC None===

===IPC DTC None===
Successful DTC reading, no error codes found

Module: Instrument Panel Control Module

===END IPC DTC None===

===GPSM DTC None===
Successful DTC reading, no error codes found

Module: Global Positioning System Module

===END GPSM DTC None===

[akulahawk]

I would suggest looking at the simple physical stuff first. My F150 threw this code after I changed the thermostat. Why? I had to loosen some charge pipe clamps and remove the pipes between the turbos, the intercooler, and the throttle body just so I could easily access the thermostat. When I put it all back together, I somehow forgot to tighten one of those clamps, leading to a leak under boost. Low boost wasn't a problem but when lots of boost was called for, the loose clamp allowed a boost leak. Having about a 75% throttle position says to me that lot of boost is being asked for.

That's a simple cause. Hopefully the turbo isn't broken... That's probably worst case. I'm not a mechanic by any stretch. The above is just what I had happen with my pickup. Once I found and tightened the loose clamp, the boost code went away.