Had a n engine replaced in Ford fiesta 1.1 ecoboost.  Now i've got the orange spanner light and engine light on on dashboard.   Hill assist and stop/start not working.  I've spoke to garage who replaced engine and they are stating that this isn't related to the new engine.  My engine seized hence why it needed a new one so I couldn't say if anything else went wrong at the time as its been off road for about 6 months.

I've tried reset by holding brake and accelarator no joy, the error code showing is P007D/12   Would this cause hill assist and stop/start not to work too.

Any ideas, just want my old car back!!

 

49 minutes ago, Hodges1 said:

Would this cause hill assist and stop/start not to work too.

No. It sounds like you have some wiring damaged on the CAN network

COPIED:

Here's a listing of what that code can mean and a diagnostic flow:

Causes
Possible causes for this P007D code include:

• Faulty sensor
• Wiring problems
• Failed or restricted charge air cooler
• Faulty PCM

Diagnostic and Repair Procedures
Begin by visually inspecting the charge air cooler temperature sensor and the corresponding wiring. Look for loose connections, damaged wiring, etc. Also, visually inspect the charge air cooler and ducting. If damage is found, repair as necessary, clear the code and see if it returns.
Next, check for technical service bulletins (TSBs) regarding the issue. If nothing is found, you will need to move forward to step by step diagnosis of the system.
The following is a generalized procedure, as testing for this code varies between vehicles. To accurately test the system, you’ll want to refer to the manufacture’s diagnostic flow chart.
 

• Do some preliminary circuit testing: use a scan tool to monitor the charge air coolant temperature sensor data parameter. Disconnect the CACT sensor; the scan tool value should drop to a very low value. Next, connect a jumper wire across the terminals. If the scan tool now displays a very high temperature, the connections are sound and the ECM can recognize the input. This means the problem is most like the sensor and not a circuit or PCM problem.
• Test the sensor: disconnect the charge air cooler temperature sensor connector. Next, measure the resistance between the two sensor terminals using a digital multimeter set to ohms. Start the engine and watch the meter value; the values should decrease smoothly as the engine warms up (check the engine temperature gauge on the dash to ensure the engine reaches operating temperature). If engine temperature increases but CACT resistance does not decrease, the sensor is faulty and should be replaced.

Check the circuit
 

• Check the reference voltage side of the circuit: with the ignition on, use a digital multimeter set to volts to check for a 5-volt reference from the PCM at one of the two charge air cooler temperature sensor terminals. If no reference signal is present, connect the meter set to ohms (with the ignition off) between the reference voltage pin on the CACT and the reference voltage pin on the PCM. If the meter reads out of limits (OL) there is an open circuit between the PCM and sensor that will need to be located and repaired. If the meter reads a numeric value, there is continuity.
• If everything is good up to this point, you’ll want to check that there is 5-volts coming out of the PCM at the reference voltage terminal. If there is not a 5-volt reference from the PCM, the PCM is probably faulty.
• Check the ground side of the circuit: connect the meter set to ohms (with the ignition off) between the ground terminal on the charge air cooler temperature sensor and the ground terminal on the PCM. If the meter reads out of limits (OL) there is an open circuit between the PCM and sensor that will need to be located and repaired. If the meter reads a numeric value, there is continuity. Finally, check that the PCM has a good ground by attaching one meter lead to the PCM ground terminal and the other to chassis ground. Once again, If the meter reads out of limits (OL) there is an open circuit between the PCM and ground that will need to be located and repaired.

2 hours ago, Hodges1 said:

Ford fiesta 1.1 ecoboost. 

Are you sure about the engine ?

There is a Fiesta 1.1 non-turbo version. Therefore not an ecoboost, and there is a Fiesta 1.0 ecoboost.

Have you got a multimeter ? If so you need to measure the resistance of both of the Canbus networks at the OBDII port. They should both be 60 Ohms. Anything below 58 or above 62 Ohm will mean damage to the network.