B356A Chevrolet Code - Vehicle Direction Warning Switch Circuit
Quick Answer
The lane departure warning system is controlled by the Active Safety Control Module. Common causes include Faulty Vehicle Direction Warning Switch, Vehicle Direction Warning Switch harness is open or shorted, Vehicle Direction Warning Switch 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
- B356A Chevrolet indicates Vehicle Direction Warning Switch Circuit.
- Common causes
- Common causes include Faulty Vehicle Direction Warning Switch, Vehicle Direction Warning Switch harness is open or shorted, Vehicle Direction Warning Switch 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 B356A Chevrolet Description
When the Frontview Camera module is operating and can detect the lane markings, the Frontview Camera module will request via serial data communications that the instrument panel cluster illuminate the green lane departure ready–to–assist indicator. If the Frontview Camera module detects that the vehicle has crossed a lane marking without the turn signal being used, the module will request that the instrument cluster flash the yellow lane departure warning indicator. An audible warning may also sound three times, or the haptic seat (if equipped) may pulse when the yellow Instrument Cluster indicator is flashing. The driver can select between audible or haptic alerts in the vehicle personalization menu. The Diagnostic Trouble Code (DTC) will be set when the Active Safety Control Module has detected a short to ground, short to voltage, or an open/high resistance for more than 10 s.
What are the Possible Causes of the DTC B356A Chevrolet?
- Faulty Vehicle Direction Warning Switch
- Vehicle Direction Warning Switch harness is open or shorted
- Vehicle Direction Warning Switch circuit poor electrical connection
- Faulty Frontview Camera Module
- Faulty Active Safety Control Module
How to Fix the DTC B356A Chevrolet?
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 B356A Chevrolet 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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Information for Specific Chevrolet Models
- B356A 2014 Chevrolet Silverado — Vehicle Direction Warning Switch Circuit
- B356A 2015 Chevrolet Silverado — Vehicle Direction Warning Switch Circuit
- B356A 2016 Chevrolet Silverado — Vehicle Direction Warning Switch Circuit
- B356A 2017 Chevrolet Silverado — Vehicle Direction Warning Switch Circuit
- B356A 2018 Chevrolet Silverado — Vehicle Direction Warning Switch Circuit
Frequently Asked Questions about B356A Chevrolet Code
1. What does the OBDII code B356A mean for a Chevrolet?
The B356A code refers to a fault in the Vehicle Direction Warning Switch Circuit, which is related to the system that manages directional warning signals.
2. What are the common symptoms of the B356A code?
Symptoms may include the directional warning system not functioning, warning lights on the dashboard, or intermittent operation of turn signals or hazard lights.
3. What causes the B356A code in a Chevrolet?
This code can be caused by a faulty direction warning switch, damaged wiring or connectors, or a malfunction in the body control module (BCM).
4. Can I still drive my Chevrolet with the B356A code?
While the vehicle may still be drivable, the directional warning system may not operate correctly, which could lead to safety issues. It’s best to address the issue promptly.
5. How do I diagnose the B356A code?
Diagnosing the code involves using an OBDII scanner to confirm the error, inspecting the vehicle direction warning switch, and checking the wiring and connectors for damage or corrosion.
6. How can I fix the B356A code on my Chevrolet?
Repairs may include replacing a faulty direction warning switch, repairing damaged wiring, or reprogramming or replacing the body control module if necessary.
7. How much does it cost to fix the B356A code?
The repair cost depends on the exact issue. Replacing a switch may cost $50–$100, while BCM repairs or replacements can range from $300–$800.
8. Can a dead battery cause the B356A code?
A weak or dead battery could potentially cause electrical system faults, including the B356A code, due to insufficient voltage affecting the BCM.
9. Does the B356A code require reprogramming the BCM?
In some cases, if the BCM is faulty or has corrupted data, reprogramming or replacing it may resolve the issue.
10. How can I prevent the B356A code from occurring?
Regular maintenance, inspecting wiring for wear or corrosion, and ensuring proper functioning of the directional warning system can help prevent this code.
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