B158F Scion Code - AV Signal Stoppage Low Battery Voltage
Quick Answer
This Diagnostic Trouble Code (DTC) is stored when a video or audio signal is interrupted due to battery voltage input to the Radio and Display Receiver Assembly (or Navigation Receiver Assembly) dropping temporarily. Common causes include Faulty Radio and Display Receiver Assembly (or Navigation Receiver Assembly), Radio and Display Receiver Assembly harness is open or shorted, Radio and Display Receiver Assembly circuit poor electrical connection. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
- What it means
- B158F Scion indicates AV Signal Stoppage Low Battery Voltage.
- Common causes
- Common causes include Faulty Radio and Display Receiver Assembly (or Navigation Receiver Assembly), Radio and Display Receiver Assembly harness is open or shorted, Radio and Display Receiver Assembly circuit poor electrical connection.
- Severity
- High - diagnose this code as soon as possible.
- Can I drive?
- Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
Code B158F Scion Description
What are the Possible Causes of the DTC B158F Scion?
- Faulty Radio and Display Receiver Assembly (or Navigation Receiver Assembly)
- Radio and Display Receiver Assembly harness is open or shorted
- Radio and Display Receiver Assembly circuit poor electrical connection
How to Fix the DTC B158F Scion?
Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the B158F Scion code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.
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Frequently Asked Questions about B158F Scion Code
1. What does the OBDII code B158F mean for a Scion?
The code B158F indicates "AV Signal Stoppage Low Battery Voltage," meaning the audio-visual system is experiencing low voltage, potentially disrupting its operation.
2. What are the common symptoms of code B158F in a Scion?
Symptoms may include a non-functional or glitchy infotainment system, loss of audio or visual output, and occasional system restarts.
3. What causes the B158F code to appear?
The primary causes are a weak or failing vehicle battery, poor electrical connections, or a fault in the AV system wiring or components.
4. Can a low vehicle battery trigger the B158F code?
Yes, a low or failing vehicle battery is a common cause of this code, as insufficient voltage can disrupt the AV system's operation.
5. How can I fix the B158F code on my Scion?
Start by checking the battery's voltage and condition, inspecting wiring and connectors for damage or corrosion, and ensuring the AV system’s power supply is stable.
6. Is the B158F code serious?
While it doesn’t typically affect vehicle drivability, it can interfere with the functionality of the infotainment system and may indicate underlying electrical issues.
7. Can I clear the B158F code without repairs?
You can clear the code using an OBDII scanner, but if the underlying issue isn’t resolved, the code will likely return.
8. How do I test for low voltage in the AV system?
Use a multimeter to measure the voltage at the battery and the AV system’s power input. A reading below the required range indicates an issue.
9. Could a blown fuse cause the B158F code?
Yes, a blown fuse in the AV system circuit could result in a power disruption, triggering the code.
10. When should I consult a professional for the B158F code?
If you’ve checked the battery, wiring, and fuses and the code persists, it’s best to consult a professional for advanced diagnostics on the AV system.
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