Thanks. I'll take a look at this.
I'm going to look into this a bit more, but I'm at work at the moment.
Is this something a layperson could do? I have a standard toolbox and not afraid to get my hands dirty.
And can you give me a very rough estimate of how much this would cost for me to DIY it?
Also, if you know of any online guide with pictures, that would save me searching for it.
I got as far as the EGR valve but I couldn't figure out how to disconnect the multiplug. Could you give me some advice on that? Can it be disconnected without taking out the EGR valve?
Also, how safe is it to keep driving the car while I'm trying to fix it myself? I read online to listen for a clicking after switching off the engine. I did that and I noticed there are 2 or 3 clicks when the engine turns off with about 2-3 seconds between each. They are regular and actually sound like something opening and closing so I'm guessing/hoping the valve is indeed opening and closing.
That said, I am still noticing sluggish acceleration on the motorway.
Given that Ford looked at it and didn't find a problem, IF the EGR is not at fault, what would be the next most likely cause of this error?
I have an ELM327 on order.
Here's a photo of my EGR multiplug:
I disconnected the multiplug and both the plug and socket look fine. No sign of corrosion.
Below is the output from Forscan. After saving the below, I reset the DTC P042F and the engine light cleared. I rechecked the DTC and P042F came back straight away although the engine light didn't come back on.
===PCM DTC P0490-21===
Code: P0490 - Exhaust Gas Recirculation Control Circuit High
Additional Fault Symptom:
- Signal is Above Maximum Threshold
- Previously Set DTC - Not Present at Time of Request
- Malfunction Indicator Lamp is Off for this DTC
Module: Powertrain Control Module
Diagnostic Trouble Code details
EGR valve position control performance or range fault
This DTC may be caused by :
Check for a stuck or sticking EGR actuator.
Sensor Previously disconnected.
Check the connectors and wiring harness for damage or contamination.
Circuit Short To Battery
Check the EGR sensor for short to battery, short to ground or open circuit.
If the DTC P042E or P042F is not present, do not replace the EGR valve. Further diagnosis is necessary.
If the PCM has been renewed or reprogrammed initiate the EGR component parameter reset.
If the engine has been renewed initiate the EGR component parameter reset.
Clear the DTC and repeat the self-test.
For further diagnostic information refer to the appropriate section of eTIS.
===END PCM DTC P0490-21===
===PCM DTC P042F-A1===
Code: P042F - EGR Control Stuck Closed
- Malfunction Indicator Lamp is On for this DTC
EGR Control Stuck Closed
This DTC is set when one or more of the following conditions occur.
maximum time to detect jammed valve exceeded
unable to release stuck or sticking EGR actuator
check EGR connector C958
drive the vehicle on the road performing a varied drive cycle, gear changing regularly causing low to high engine RPM, where possible drive up and down hills
Are the DTCs still present?
===END PCM DTC P042F-A1===
===PCM DTC P1412-68===
Code: P1412 - EGR Valve Frozen
- Invalid Signal
- DTC Present at Time of Request
EGR Valve Frozen
Calibration data may be out of date
Check the PCM for the latest calibration.
===END PCM DTC P1412-68===
===ABS DTC None===
Successfull DTC reading, no error codes found
Module: Anti-Lock Brake / Traction Control Module
===END ABS DTC None===
===EPS DTC None===
Module: Electronic-Controlled Power Steering
===END EPS DTC None===
===IC DTC None===
Module: Instrument Cluster
===END IC DTC None===
===RCM DTC None===
Module: Restraint Control Module
===END RCM DTC None===
===ACM DTC None===
Module: Audio Control Module
===END ACM DTC None===
===GEM DTC None===
Module: Generic Electronic Module
===END GEM DTC None===
Thanks! This looks like the correct part, but how can I be sure?