Chevrolet B1A05
Follow SI 6656059 for this condition. If SI directs replacement of B174W
Quick answer
For U.S.-market 2025–2026 Chevrolet Equinox vehicles, B1A05 is addressed in official Chevrolet service information by following SI 6656059 when the code is active in the B174W Front View Camera module. Replacement of B174W is only indicated if SI 6656059 directs it.
This page separates verified manufacturer/regulator evidence from supporting material. Unsupported causes, repairs or safety conclusions are not guessed.
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1. What does B1A05 mean?
For U.S.-market 2025–2026 Chevrolet Equinox vehicles, B1A05 is addressed in official Chevrolet service information by following SI 6656059 when the code is active in the B174W Front View Camera module. Replacement of B174W is only indicated if SI 6656059 directs it.
2. Technical explanation
The verified evidence identifies B1A05 as a diagnostic condition reported by the B174W Front View Camera module. The official diagnostic path in PIT6503D/PIT6503E says to check whether B1A05 is active in that module. If it is active, follow SI 6656059. The supplied evidence does not provide the underlying fault definition, component-level cause, diagnostic steps within SI 6656059, or replacement criteria beyond the instruction that B174W replacement may be directed by that service information.
3. What system is affected?
B174W Front View Camera module. A broader system name is not established by verified evidence.
4. How serious is this code?
Unknown. The supplied verified evidence does not assign a severity level.
5. Symptoms you may notice
- Not yet established by verified evidence.
6. Possible causes
- Not yet established by verified evidence. The official communication directs diagnosis through SI 6656059 when B1A05 is active in the B174W Front View Camera module.
7. Can I still drive the vehicle?
Not yet established by verified evidence.
8. Can I charge the vehicle?
Not yet established by verified evidence.
9. What you can safely do
- Have the vehicle evaluated using the applicable Chevrolet service procedure if B1A05 is active in the B174W Front View Camera module.
- Do not assume the B174W Front View Camera module requires replacement; the verified communication states replacement only if SI 6656059 directs it.
10. Step-by-step troubleshooting
- Confirm whether B1A05 is set as Active by the B174W Front View Camera module.
- If B1A05 is active, follow SI 6656059.
- The supplied evidence references separate diagnostic paths for active U1615 or U1616 before proceeding to the B1A05 check, but it does not provide their detailed procedures.
11. When to contact service
Contact a Chevrolet dealer or qualified service facility for diagnosis under SI 6656059 if B1A05 is active in the B174W Front View Camera module.
12. What the service center may check
- Check whether B1A05 is active in the B174W Front View Camera module.
- Follow SI 6656059 when B1A05 is active.
- Replace B174W only if SI 6656059 directs replacement.
13. Possible repair or resolution
- Not yet established by verified evidence. The available official communication permits B174W replacement only when directed by SI 6656059.
14. Affected vehicles
- Chevrolet Equinox · 2025–2026 · US
15. Related TSBs / service bulletins
- PIT6503E, NHTSA Manufacturer Communication 11036709, published August 27, 2026: directs technicians to follow SI 6656059 if B1A05 is active in B174W.
- PIT6503D, NHTSA Manufacturer Communication 11036400, published August 21, 2026: directs technicians to follow SI 6656059 if B1A05 is active in B174W.
16. Recall information
- Not yet established by verified evidence.
17. Official manufacturer information
Official NHTSA-hosted Chevrolet manufacturer communications: PIT6503E (MC-11036709-0001.pdf) and PIT6503D (MC-11036400-0001.pdf). Both state that an active B1A05 in the B174W Front View Camera module should be diagnosed using SI 6656059.
19. Frequently asked questions
What does B1A05 mean for a 2025–2026 Chevrolet Equinox?
The verified evidence states that, when B1A05 is active in the B174W Front View Camera module, Chevrolet service information SI 6656059 must be followed. A more specific fault definition is not established by the supplied evidence.
Does B1A05 mean the front view camera must be replaced?
No. The official communication states that B174W replacement is appropriate only if SI 6656059 directs replacement.
Can I drive or charge with B1A05?
Not yet established by verified evidence.