B294400

Code

HYUNDAI B — Body

FR Speaker Connection Error

Brand: HYUNDAI

Type: B — Body

Views: UK: 15 EN: 16 RU: 13

AI status

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Page language: EN

Scan audio/head unit for stored DTCs and freeze frame data; note whether code is current or intermittent
Visually inspect FR speaker, connector, and wiring for damage, corrosion, or loose pins
Verify audio fuses and amplifier power/ground are present and secure
Perform a basic continuity/resistance check of FR speaker circuit (speaker unplugged)
Play a test tone to confirm presence/absence of audio output at the speaker connector

Speaker resistance (DC) typical: approximately 2–8 ohms (varies by speaker). Open circuit indicates >infinite; short to ground indicates near 0 ohms to chassis
With audio playing, AC audio signal measurable at speaker connector: ~0.2–5 Vrms depending on volume
DC voltage at speaker output (audio off) should be near 0 V DC (less than ~1 V) on most head-unit outputs; some powered amps may have a bias (refer to factory spec)
Amplifier/head unit supply voltage: battery voltage (~11–14 V) present at power/ignition supply pins; ground continuity to chassis

Use a scan tool to read/clear DTC B294400, then re-run and observe if code returns immediately or after test drive.
Inspect the front-right speaker and connector for visible damage, water intrusion, or disconnected wires. Repair connectors as needed.
With ignition ON and audio muted, disconnect the speaker at the connector. Measure DC resistance across speaker leads. If open (OL) or much higher than spec, replace speaker.
With speaker disconnected, check continuity from the head unit/amplifier FR speaker output pin to the vehicle connector pin. Repair any open/shorted wiring.
Check for short to ground or battery: measure resistance from each speaker lead to chassis ground and to battery positive. A near-zero ohm reading to ground indicates short.
Reconnect speaker and play a steady test tone at low volume. Probe the connector at the amplifier/head unit with an oscilloscope or multimeter AC setting to confirm an audio signal is present and within expected amplitude.
Verify amplifier/head unit power and ground voltages at their connectors. Replace or repair blown fuses and poor grounds.
If wiring and speaker check good but no output, swap front-right output with another known-good channel (or swap speakers) if possible to isolate head unit/amplifier fault.
After repairs, clear DTCs and perform a functional test, verifying no recurrence under normal driving and audio conditions.

⚠️ Status

Front-right speaker circuit connection error detected by audio control module — open/short or abnormal load on FR speaker output.

🟡 Repair difficulty: Medium

⏱️ Diagnostic time: 0.5-2.0 hours

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