B158C Scion Code - SD Card Communication Malfunction
Quick Answer
The Radio and Display Receiver Assembly (or Navigation Receiver Assembly) stores this Diagnostic Trouble Code (DTC) when the SD card cannot be mounted when inserted into the SD card slot. Common causes include Faulty SD Card, Faulty Radio and Display Receiver Assembly (or Navigation Receiver Assembly), Radio and Display Receiver Assembly harness is open or shorted. 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
- B158C Scion indicates SD Card Communication Malfunction.
- Common causes
- Common causes include Faulty SD Card, Faulty Radio and Display Receiver Assembly (or Navigation Receiver Assembly), Radio and Display Receiver Assembly harness is open or shorted.
- 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 B158C Scion Description
What are the Possible Causes of the DTC B158C Scion?
- Faulty SD Card
- 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 B158C 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 B158C 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 B158C Scion Code
1. What does the OBDII code B158C mean in a Scion?
B158C indicates an SD Card Communication Malfunction, meaning the vehicle's system cannot properly communicate with the SD card used for navigation or multimedia functions.
2. What are the common symptoms of a B158C code in a Scion?
Symptoms include the navigation system not working, a blank or frozen infotainment screen, error messages related to the SD card, or system rebooting repeatedly.
3. What causes the B158C code to trigger?
Common causes include a damaged or corrupted SD card, faulty SD card reader, loose or damaged wiring, or software issues in the infotainment system.
4. How can I fix the B158C code in my Scion?
Start by removing and reinserting the SD card to ensure proper seating. If the issue persists, try replacing the SD card, checking the card reader, or updating the system software.
5. Can I continue driving with the B158C code active?
Yes, you can continue driving, as this code typically affects only the infotainment or navigation system and not the vehicle's core functions.
6. How do I know if the SD card itself is causing the B158C code?
Test the SD card in another compatible device. If it doesn't work elsewhere, it may be corrupted or damaged and needs replacement.
7. Can a software update fix the B158C code?
Yes, updating the infotainment software may resolve communication issues if the code is caused by a software bug.
8. What should I do if replacing the SD card doesn’t fix the B158C code?
Inspect the SD card reader for damage or dirt, check wiring connections, or consult a professional to diagnose potential internal system faults.
9. Is the B158C code covered under warranty?
It depends on your vehicle's warranty terms. Issues with factory-installed systems may be covered if the vehicle is still under warranty.
10. How much does it cost to fix a B158C code in a Scion?
Costs vary depending on the root cause. Replacing an SD card may cost $20–$100, while repairing the card reader or wiring could be more expensive, potentially $150–$500.
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