Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
2018 Ford Fiesta STFACTORY OEM SERVICE PROCEDURE
Information System And Entertainment System DTCS: Am/Fm/Cd/Sync: GPSM
DTC INDEX
| DTC | Description | Action |
|---|---|---|
| U0100:00 | Lost Communication with ECM/PCM "A": No Sub Type Information | GO to Pinpoint Test X |
| U0140:00 | Lost Communication With Body Control Module: No Sub Type Information | GO to Pinpoint Test Y |
| U0155:00 | Lost Communication With Instrument Panel Cluster (IPC) Control Module: No Sub Type Information | GO to Pinpoint Test Z |
| U0401:00 | Invalid Data Received from ECM/PCM A: No Sub Type Information |
NOTE:
If no Diagnostic Trouble Codes (DTCs) are present in the PCM, DIAGNOSE the observable symptom. DIAGNOSE any Diagnostic Trouble Codes (DTCs) present in the PCM. REFER to Diagnosis and Testing in the appropriate Electronic Engine Controls article. |
| U0422:00 | Invalid Data Received from Body Control Module: No Sub Type Information |
NOTE:
If no Diagnostic Trouble Codes (DTCs) are present in the BCM, DIAGNOSE the observable symptom. DIAGNOSE any Diagnostic Trouble Codes (DTCs) present in the BCM. REFER to: Body Control Module (BCM)
. |
| U0423:00 | Invalid Data Received from Instrument Panel Cluster Control Module: No Sub Type Information |
NOTE:
If no Diagnostic Trouble Codes (DTCs) are present in the IPC, DIAGNOSE the observable symptom. DIAGNOSE any Diagnostic Trouble Codes (DTCs) present in the IPC. REFER to: Instrumentation, Message Center and Warning Chimes
. |
| U2100:00 | Initial Configuration Not Complete: No Sub Type Information | This DTC sets due to an incorrect or incomplete GPSM configuration. Using a diagnostic scan tool, CARRY OUT the GPSM programming procedure. |
| U2101:00 | Control Module Configuration Incompatible: No Sub Type Information | This DTC sets due to an incorrect or incomplete GPSM configuration. Using a diagnostic scan tool, CARRY OUT the GPSM programming procedure. |
| U3000:09 | Control Module: Component Failure | CLEAR the DTC. WAIT at least 10 seconds. REPEAT the self-test. If the DTC is retrieved again, INSTALL a new FCDIM. REFER to: Global Positioning System Module (GPSM) . |
| U3000:41 | Control Module: General Checksum Failure | CLEAR the DTC. WAIT at least 10 seconds. REPEAT the self-test. If the DTC is retrieved again, INSTALL a new FCDIM. REFER to: Global Positioning System Module (GPSM) . |
| U3000:42 | Control Module: General Memory Failure | CLEAR the DTC. WAIT at least 10 seconds. REPEAT the self-test. If the DTC is retrieved again, INSTALL a new FCDIM. REFER to: Global Positioning System Module (GPSM) . |
| U3003:16 | Battery Voltage: Circuit Voltage Below Threshold | GO to Pinpoint Test AD |
| U3003:17 | Battery Voltage: Circuit Voltage Above Threshold | GO to Pinpoint Test AE |
Factory Service Tools
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.
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