Code
ADSP_W029
TESLA
Tesla Alert
Baseamp0Sm Fault
Views:
UK: 12
EN: 19
RU: 11
AI status
Completed
Completed
100%
Causes
- Faulty amplifier module (internal electronics or protection tripped)
- Intermittent or corroded connector or wiring to the amplifier
- Blown fuse, fusible link, or tripped circuit breaker on the amplifier supply
- Loss of ground or high-resistance ground connection
- Supply voltage out of range (low battery, charging system issues, 12V/aux battery problem)
- CAN/LIN bus or ADSP communication error between amplifier and main controller
Symptoms
- Audio muted or intermittent audio output from one or more speakers
- Distorted audio, loud popping, or speaker protection engaged
- Infotainment or audio system warning messages or reduced functionality
- Stored ADSP_W029 code in vehicle fault memory; possible related network communication DTCs
- In some vehicles, loss of certain driver-assist or cabin features if they share the same module/bus
What to check
- Read and record freeze-frame data and full ADSP logs with OEM scan tool
- Scan for related DTCs on gateway, infotainment, body control, and amplifier modules
- Visually inspect amplifier and harness for corrosion, water ingress, damage, or pin backed-out connectors
- Check amplifier supply fuse(s) and fusible links for continuity
- Measure supply voltage at amplifier power input with key on (expected ~12 V; some systems use 12–14 V or auxiliary battery voltage)
- Check amplifier ground for low resistance to chassis (close to 0 ohms)
Signal parameters
- Amplifier supply voltage (expected ~12–14 V; verify stable under load)
- Amplifier ground resistance to chassis (close to 0 Ω)
- Amplifier enable/ignition input voltage level
- CAN bus messages and error counters for ADSP/infotainment IDs (vehicle-specific IDs)
- Speaker load impedance (ohms) per channel
- Amplifier temperature or internal fault status bits (if available from scanner)
Diagnostic algorithm
- Connect OEM-capable diagnostic scanner and retrieve ADSP_W029 plus all related DTCs and module logs.
- Note occurrence conditions (key on, audio on, engine run, temperature, after wash) and attempt to reproduce.
- Clear codes and re-run to see if code returns immediately or after specific action.
- Visually inspect amplifier, connectors, and harness for corrosion, damage, moisture; repair or reseal as needed.
- Check and confirm continuity of supply fuse(s) and measure battery voltage at amplifier harness with key on and with audio load.
- Measure ground at amplifier mounting and harness; repair any high-resistance ground connections.
- Verify CAN/LIN communication to amplifier: check for module presence, message traffic, and error frames. Repair bus wiring or termination if required.
- Isolate speaker outputs (disconnect at amplifier) and check for speaker shorts; a shorted speaker can cause the amplifier to enter protection.
- If wiring, power, ground, and speakers are good, attempt a software/firmware reflash or module reset using OEM tool per Tesla procedures.
- If fault persists after the above, replace amplifier module only after confirming wiring and bus are serviceable. Re-test and clear codes. Document findings and update vehicle software where applicable.
Likely causes
- Loose/corroded connector or damaged wiring to amplifier
- 12V/aux supply fuse blown or low supply voltage
- Internal amplifier fault (overtemperature or protection state)
- Communication loss on vehicle bus (CAN/LIN)
Fault status
Status
ADSP_W029 — Baseamp0Sm fault detected by ADSP subsystem. The amplifier reported an internal fault, communication error, or abnormal power/ground condition; inspection and verification of wiring, power, ground, bus communications, and module operation required.
Repair difficulty: Medium
Diagnostic time: 0.5-2.0 hours
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