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.
Pinpoint Test Aa: U0423:86
2021 Ford Edge SE, 4WDSECTION Pinpoint Test Aa: U0423:86
WARNING: This page is about a different car, the 2021 Ford F-150. However, it is still accessible from the selected car via links, so may be relevant.
- Normal Operation and Fault Conditions
REFER to: Lane Keeping System - System Operation and Component Description .
DTC Fault Trigger Conditions
DTC Description Fault Trigger Condition IPMA U0423:86 Invalid Data Received from Instrument Panel Cluster Control Module: Signal Invalid This continuous memory DTC can set in IPMA due to a fault in the IPC or an input to the IPC. Possible Sources
- IPC concern
- AA1 CHECK FOR IPC ALIVE/SEQUENCE COUNTER INCORRECT/NOT UPDATED
- Ignition ON.
- Using a diagnostic scan tool, clear the Diagnostic Trouble Codes (DTCs) for the module in question.
Is DTC U0423:86 still present?
Yes RETRIEVE and FOLLOW non-network Diagnostic Trouble Codes (DTCs) from the IPC. REFER to: Instrumentation, Message Center and Warning Chimes . No DIAGNOSE the observable symptom.
RENDER: 1.0x
NO RELATED
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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.