Have a 19 lariat special edition with 2600 miles. Had a roush blower installed by my dealer when the truck had couple hundred miles. I keep getting this cel : p050E. Dealer resets, can’t find any resolution or what may be wrong. Roush says it’s fords issue, not theirs. Love this truck, great power, runs perfect. Just super annoyed at this point. All help greatly appreciated.

 

https://repairpal.com/obd-ii-code-p0...rature-too-low

 

We have that info. It’s quite ambiguous as to what the problem actually is. From exhaust to internal motor failure. Where exactly do you start looking? Lol. Was hoping someone had some experience with this issue.

 

I have the same issue with my 2019 with a Roush Blower. Mine goes in on June 1st, I’ll let you know what I find out.

 

When the S/C was installed, did you make any changes to the exhaust system? If not, then the PCM was reprogrammed for the addition of the S/C and it is most likely a problem with the tune.

From my Powertrain Control/Emission Diagnostic Manual:

Cold Start Emission Reduction System Monitor

The PCM uses the cold start emission reduction system monitor to calculate the actual catalyst warm up temperature during a cold start. The actual catalyst warm up temperature calculation uses measured engine speed, measured air mass and commanded spark timing inputs to the PCM. The PCM then compares the actual temperature to the expected catalyst temperature. The expected catalyst temperature calculation uses desired engine speed, desired air mass and desired spark timing inputs to the PCM. The difference between the actual and expected temperatures is reflected in a ratio. This ratio is a measure of how much loss of catalyst heating occurred over the period of time and when compared with a calibrated threshold it helps the PCM to determine if the cold start emission reduction system is working correctly. This ratio correlates to tailpipe emissions, and a malfunction indicator lamp (MIL) illuminates and a DTC sets when the calibrated threshold is exceeded. The monitor is disabled if a concern is present in any of the sensors or systems used for expected catalyst temperature model calculation.

Cold Start Emission Reduction System Monitor Operation:

• DTC: P050E Cold start engine exhaust temperature too low
• Monitor execution: Once per driving cycle, during the first 15 seconds of a cold start
• Monitor sequence: None
• Monitoring duration: Data gathering occurs during the first 15 seconds of a cold start. The decision to set P050E is made 300 seconds after start. This delay gives time for other diagnostics (for example, misfire monitor) to determine if another DTC should set instead of P050E.

Cold Start Emission Reduction System Monitor Entry Conditions:

• Barometric pressure is above 74.5 kPa (22 in-Hg)
• Engine coolant temperature at the start of the monitor is between 1.67°C (35°F) and 37.78°C (100°F)
• Catalyst temperature at the start of the monitor is between 1.67°C (35°F) and 51.67°C (125°F)
• Fuel level is above 15%
• Injector cutout torque reduction is inactive
• PTO operation is disabled

Possible Causes:

• Intake air restriction
• Exhaust restriction
• Engine mechanical concern
• Damaged or sludged electronic throttle body (ETB)
• Vacuum leaks
• Damaged PCM

Diagnostic Aids:

Disregard the freeze frame data. Freeze frame data does not apply to the cold start monitor.

This DTC is informational only and may be accompanied by other DTCs. Diagnose other DTCs first. If no other DTCs are present, inspect the intake air system for air restrictions, vacuum leaks, and damage. If no concerns are present, clear the DTCs and verify the engine coolant temperature is below 37.8°C (100°F). Allow the vehicle to soak for 2 to 3 hours if necessary for the engine coolant temperature to fall below 37.8°C (100°F).

Start the engine without touching the accelerator pedal and allow the engine to idle for 6 minutes in park. If no DTCs are present and the malfunction indicator lamp (MIL) is not illuminated after idling for 6 minutes, carry out the key ON, engine running (KOER), self-test to confirm that no DTCs are present and the repair is complete.

 

Thank you for the great info 52merc.

I did have the Roush exhaust installed with the S/C. The dealer checked all sensors and cleared the code, as seen below....

4781 1.00 VERIFIED CEL ON CHECKED FOR CODES FOUND P050E "ENGINE EXHAUST TEMP TOO LOW ON WARM UP" COMPLETED DIAG, CODE IS INFO CODE ONLY. CHECKED OVER EXHAUST AND SENSORS. COMPLETED ENGINE RUNNING SELF TEST PASSED. NO CODE PRESENT COMPLETED WARM UP TEST WELL CHECKING EXHAUST TEMPS OK. CODE MAY HAVE BEEN A ERROR DUE TO SUPER CHARGER AND TUNE. CODE HAS BEEN CLEARED AND SELF TESTED SYSTEM OK. IF CODE COMES BACK WE WILL NEED TECH TO CONTACT ROUSH FOR A POSSIBLE TUNE CHANGE. AT THIS TIME NO ISSUES ARE PRESENT. NPF1.0 WITH CODE.

Really hoping it’s not going to be an ongoing issue.

 

Just had this pop up this morning on my 2019 Roush SC F150 for the first time. Just over 5K miles and had oil change done at Roush dealer few weeks ago.

 

With additional people responding with the same code, I'd wager it's a Roush tune issue. You could try wrapping your exhaust or ceramic coating the manifolds and the exhaust at least to the catalytic converters to hold the heat in better.

You are unfortunately in a position where the dealer is going to point the finger at Roush, and Roush is going to point the finger at the installer. The dealer is either incompetent or playing stupid when they reset the code and it doesn't immediately come back; it could take certain random conditions for the code to set. It would likely be a relatively easy and minor tune change to resolve the issue. I am familiar with HP Tuners as I have used it for about 15 years on multiple GM vehicles with LS-based engines.

Good luck getting it resolved.

 

Maybe so, but mine isn't an installer issue as it's a Roush truck itself so Roush did the install as well.

Fwiw my code seemed to clear its self after a few days here randomly somehow.

 

When I finally spoke to the roush techs about the issue, they acknowledged that it was an issue with their tune and they were working on a resolution. I did the latest update from ford and haven’t had an issue yet. Been code free for about 10k miles.