Help Please - Fault Codes PCM DTC P010F:23-24, PCM DTC P0299

[Johnnyt63]

Hi hopefully someone can help.
Ford Transit Mk8, 2014, 2.2TDCI, TREND, Front wheel Drive.

I have the following fault codes PCM DTC P010F:23-24, PCM DTC P0299 when i plugged into Forscan.
History
Lack of power took it to the a mechanic who replaced a cracked hose which i saw. I took it for a drive and warning lights came on. I took it back, smoke tested, no leaks, cleared all codes and put some forte turbo diesel cleaner in (as asked to by mechanic) and run it.

The fault codes only currently come up when I am in 4th Gear, 2800-3000rpm at approximately 68-72 mph when it goes into limp mode. Full information from scan can be seen below. Please if anyone could help it would be much appreciated

Full Forscan Info
===PCM DTC P010F:23-24===
Code: P010F - Mass or Volume Air Flow Sensor A/B Correlation

Additional Fault Symptom (:23):
- Signal Stuck Low

Status (-24):
- DTC Maturing - Intermittent at Time of Request
- Malfunction Indicator Lamp is Off for this DTC

Module: Powertrain Control Module

Freeze Frame #1:
-EVENT_TIME: 317945709 s (Tue Aug 26 13:58:22 2025) - Event time
-TOTAL_DISTANCE: 203304 km - Total Distance
-MODULE_VOLTAGE: 14.5 V - Control Module Voltage
-OUTDOOR_TEMPERATURE: 19 °C - Outside temperature
-PWR_MODE_KEY: Running - Power Mode Key State
-PWR_MODE_QF: Power Mode OK - Power Mode Quality Factor
-LOAD: 37.25 % - Calculated Load Value
-ECT: 91 °C - Engine coolant temperature
-MAP: 65.0 kPa - Manifold absolute pressure sensor
-RPM: 2753 1/min - Engine Revolutions Per Minute
-VSS: 102.0 km/h - Vehicle Speed
-IAT: 26 °C - Intake Air Temperature
-MAF: 31.97 g/s - Mass Air Flow
-TP: 94.51 % - Throttle Position
-RUNTM: 1163 s - Time Since Engine Start
-FRP: 132780.0 kPa - Fuel Rail Pressure
-EGR_PCT: 0.00 % - Commanded EGR
-BARO: 98.0 kPa - Barometric pressure
-CATEMP11: 567 °C - Catalyst Temperature Bank 1, Sensor 1
-CATEMP12: 434 °C - Catalyst Temperature Bank 1, Sensor 2
-APP_D: 43.92 % - Accelerator Pedal Position D
-APP_E: 43.92 % - Accelerator Pedal Position E
-TAC_PCT: 0.00 % - Commanded Throttle Actuator Control
===END PCM DTC P010F:23-24===

===PCM DTC P0299:00-24===
Code: P0299 - Turbocharger/Supercharger 'A' Underboost Condition

Status (-24):
- DTC Maturing - Intermittent at Time of Request
- Malfunction Indicator Lamp is Off for this DTC

Module: Powertrain Control Module

Freeze Frame #1:
-EVENT_TIME: 316026287 s (Mon Aug 04 08:48:00 2025) - Event time
-TOTAL_DISTANCE: 203197 km - Total Distance
-MODULE_VOLTAGE: 14.5 V - Control Module Voltage
-OUTDOOR_TEMPERATURE: 16 °C - Outside temperature
-PWR_MODE_KEY: Running - Power Mode Key State
-PWR_MODE_QF: Power Mode OK - Power Mode Quality Factor
-LOAD: 84.71 % - Calculated Load Value
-ECT: 93 °C - Engine coolant temperature
-MAP: 182.0 kPa - Manifold absolute pressure sensor
-RPM: 3160 1/min - Engine Revolutions Per Minute
-VSS: 117.0 km/h - Vehicle Speed
-IAT: 26 °C - Intake Air Temperature
-MAF: 116.53 g/s - Mass Air Flow
-TP: 94.51 % - Throttle Position
-RUNTM: 1748 s - Time Since Engine Start
-FRP: 163420.0 kPa - Fuel Rail Pressure
-EGR_PCT: 0.00 % - Commanded EGR
-BARO: 98.0 kPa - Barometric pressure
-CATEMP11: 472 °C - Catalyst Temperature Bank 1, Sensor 1
-CATEMP12: 447 °C - Catalyst Temperature Bank 1, Sensor 2
-APP_D: 76.47 % - Accelerator Pedal Position D
-APP_E: 76.86 % - Accelerator Pedal Position E
-TAC_PCT: 0.00 % - Commanded Throttle Actuator Control
===END PCM DTC P0299:00-24===

===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===

===ABS DTC U0401:68-48===
Code: U0401 - Invalid Data Received From ECM/PCM 'A'

Additional Fault Symptom (:68):
- Event Information

Status (-48):
- Previously Set DTC - Not Present at Time of Request
- Malfunction Indicator Lamp is Off for this DTC
- Test not complete

Module: Antilock braking system

Freeze Frame #1:
-EVENT_TIME: 317945671 s (Tue Aug 26 13:58:45 2025) - Event time
-TOTAL_DISTANCE: 203303 km - Total Distance
-MODULE_VOLTAGE: 14.8 V - Control Module Voltage
-OUTDOOR_TEMPERATURE: 19 °C - Outside temperature
-POWER_MODE: Running - Power Mode Status
===END ABS DTC U0401:68-48===

===ABS DTC C0051:29-08===
Code: C0051 - Steering Wheel Position Sensor

Additional Fault Symptom (:29):
- Signal Invalid

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

Module: Antilock braking system

Freeze Frame #1:
-POWER_MODE: PM_Key_out - Power Mode Status
===END ABS DTC C0051:29-08===

[metalworker0]

you need to show actual EGR, plus actual wastegate percent at hard and medium acceleration so i can see whats going on, as they may be the trouble

plus have a look at the boost pipes

The 2.2 custom has a problem with the boost pipe rubbing on a bolt that causes a hole in it- where it passes behind the alternator. no one has confirmed this happens on the mk8

all the best.mark

[Johnnyt63]

you need to show actual EGR, plus actual wastegate percent at hard and medium acceleration so i can see whats going on, as they may be the trouble

plus have a look at the boost pipes

The 2.2 custom has a problem with the boost pipe rubbing on a bolt that causes a hole in it- where it passes behind the alternator. no one has confirmed this happens on the mk8

all the best.mark

Thanks for your reply Mark, much appreciated.
I'll look into how i can retrieve this data with Forscan and hopefully get it up on here tomorrow. I will also have a look at the boost pipes.

[metalworker0]

keep get mixed up with these things, it will not be wastegate it will be turbo vane actuator percent, which would fail on actuator motor -- stripped gears, bad motor etc

all the best.mark