I have a p0626 code And would like to know a list of diag...

Hello and thank you for choosing JustAnswer. Sorry to hear you are having this problem with the Ford. My name is \*\*\*\*\* \*\*\*\*\* I will do all I can to assist with this issue. You may receive an Automated prompt for a phone call. There is an additional fee for the call and is **NOT** required. Continuing with the **Chat** is my **Preferred** method. **(I have attached a document(s) to this thread. Please let me know if it does not show up on your end or if you have any problems opening the file. Note: Attachments may not show up if you are using a mobile device, go to your last e-mail from JustAnswer and you will see the attachment.) Note: Document links will automatically delete after 7 days.** For the P026 1. First, measure voltage the voltage at the battery, then compare that voltage to the large battery cable at the alternator, and the battery sense wire at the 3 pin connector. (See the attached illustration.) The voltage should be the same if the cables, wiring and grounds are good. 2. If there is no voltage drop between the alternator and the batteries, then test the circuits between the PCM and alternator 3 pin connector. See the attached alternator control circuits' test. 3. If the powers to the alternator are good, and the control circuits test ok, suspect an alternator issue. [https://www.dropbox.com/s/60nni4eusjju3qi/Voltage%20Drop.pdf?dl=0](https://www.dropbox.com/s/60nni4eusjju3qi/Voltage%20Drop.pdf?dl=0) [https://www.dropbox.com/s/79pdm9mjcoqm71x/PCM.pdf?dl=0](https://www.dropbox.com/s/79pdm9mjcoqm71x/PCM.pdf?dl=0) [https://www.dropbox.com/s/31lf4g5umy444jk/P0626.pdf?dl=0](https://www.dropbox.com/s/31lf4g5umy444jk/P0626.pdf?dl=0) P1000 can be ignored - It means the OBD monitors have not reset since the last time the codes were cleared. The P0053 is an [oxygen sensor](/topics-oxygen-sensor-ford/) code. [https://www.dropbox.com/s/kvrz1eklhwkk4gg/P0053.pdf?dl=0](https://www.dropbox.com/s/kvrz1eklhwkk4gg/P0053.pdf?dl=0) Bear with me just a moment and I will provide the diagnostic steps for this code. I hope this helps. Please let me know if you have any questions. Note: If I don’t immediately respond, I kindly ask for your patience, I will reply as soon as possible. Thank you for choosing JustAnswer. 100% Customer Satisfaction is my goal. If you are satisfied with my answer please don’t forget to rate my service. (Where the stars are by “Rate my Service) If for any reason you are not satisfied with the answer I have provided, please let me know

For the P0052. 1. First access and unplug the bank 1 sensor 1. See the attached illustration. [https://www.dropbox.com/s/acq9ly9i2oki933/Bank%201%2002%20sensor%20location.pdf?dl=0](https://www.dropbox.com/s/acq9ly9i2oki933/Bank%201%2002%20sensor%20location.pdf?dl=0) 2. Load test the power to the heater circuit, see the attached illustration. [https://www.dropbox.com/s/kpt1u5jkmchddwn/load%20test%20power%20circiut%20to%2002%20Sensor.pdf?dl=0](https://www.dropbox.com/s/kpt1u5jkmchddwn/load%20test%20power%20circiut%20to%2002%20Sensor.pdf?dl=0) 3. If the power is ok, test the resistance of the heater circuit to be sure the sensor itself is not open. If the heater sensor is open, replace the failed sensor. 4. If the sensor is ok, access and unplug the [engine](/topics-engine-ford/) connector at the PCM. [https://www.dropbox.com/s/7m6hoghjlsprpz3/PCM%20to%20engine%20connector%20location.pdf?dl=0](https://www.dropbox.com/s/7m6hoghjlsprpz3/PCM%20to%20engine%20connector%20location.pdf?dl=0) 5. Test the oxygen sensor heater circuit. See the attached illustration. [https://www.dropbox.com/s/9os2mca6it46tuv/Testing%20the%20heater%20circuit.pdf?dl=0](https://www.dropbox.com/s/9os2mca6it46tuv/Testing%20the%20heater%20circuit.pdf?dl=0) 6. If there is no voltage to the oxygen sensor heater circuit at the PCM, repair the open wire between the PCM and the sensor. 7. If the heater circuit tests ok, swap the bank 1 and bank 2 heater circuits at the PCM engine connector, see the attached illustration. [https://www.dropbox.com/s/koyvb0lu4a7g4tf/Swapping%20the%20connector.pdf?dl=0](https://www.dropbox.com/s/koyvb0lu4a7g4tf/Swapping%20the%20connector.pdf?dl=0) 8. Plug the connector back in, clear all codes, then cycle the key and start the engine. 9. If the code moves to other sensor, suspect a harness or sensor issue, maybe try a different brand sensor. 10. If the code remains the same, suspect a failed PCM.