OBD Code B1469: Chime Input Request Circuit Open

Q: What does OBD code B1469 mean?

Chime Input Request Circuit Open. The car's chime system has a broken electrical connection preventing the ECU from triggering audio alerts. Think of it like a doorbell wire that's been cut—the button works, but no sound comes out.

Q: What are the symptoms of fault code B1469?

No chime sound when doors open or seatbelt warning needed, Warning lights illuminate but no audio alert accompanies them, Intermittent chiming or chime only works sometimes

Q: How do I fix OBD fault code B1469?

Inspect and reseat the chime module connector under the steering column for corrosion or loose pins.. Check for damaged or pinched wires between the instrument cluster and chime module, repairing any visible breaks.. Replace the chime module if continuity testing confirms the circuit is open and wiring is intact.

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What This Actually Means

In plain language — no jargon

The car's chime system has a broken electrical connection preventing the ECU from triggering audio alerts. Think of it like a doorbell wire that's been cut—the button works, but no sound comes out.

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Symptoms You May Notice

3 known symptoms for this code

No chime sound when doors open or seatbelt warning needed

Warning lights illuminate but no audio alert accompanies them

Intermittent chiming or chime only works sometimes

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Embedded Systems Insight

What the ECU/ECM is actually computing

The ECU monitors the voltage signal on the chime request circuit to verify continuity and proper circuit operation. It expects a clean signal path to the chime module when warning conditions are triggered. An open circuit results in no voltage feedback, triggering the fault code.

Voltage & Parameter Thresholds

Parameter	Normal Range	Fault Condition
Chime Circuit Voltage	12V signal present when activated	0V or no signal detected (open circuit)
Circuit Continuity	Resistance <5 ohms	Infinite resistance (open circuit)

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Diagnostic & DIY Fix Guide

Check these in order — from cheapest to most complex

1

Dashboard wiring harness connector

Inspect and reseat the chime module connector under the steering column for corrosion or loose pins.

2

Chime request circuit wiring

Check for damaged or pinched wires between the instrument cluster and chime module, repairing any visible breaks.

3

Chime module replacement

Replace the chime module if continuity testing confirms the circuit is open and wiring is intact.