B2252 Buick Code - Left Key Cylinder Switch Fault
Quick Answer
The driver or passenger door key switch signal circuits provide input to the Driver Door Module (DDM) or Passenger Door Module (PDM) when the driver or passenger door lock cylinder is rotated to the UNLOCK position. Common causes include Faulty Left Key Cylinder Switch, Left Key Cylinder Switch harness is open or shorted, Left Key Cylinder 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
- B2252 Buick indicates Left Key Cylinder Switch Fault.
- Common causes
- Common causes include Faulty Left Key Cylinder Switch, Left Key Cylinder Switch harness is open or shorted, Left Key Cylinder 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 B2252 Buick Description
What are the Possible Causes of the DTC B2252 Buick?
- Faulty Left Key Cylinder Switch
- Left Key Cylinder Switch harness is open or shorted
- Left Key Cylinder Switch circuit poor electrical connection
- Faulty Driver Door Module (DDM)
How to Fix the DTC B2252 Buick?
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 B2252 Buick 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 B2252 Buick Code
1. What does the OBDII code B2252 mean for a Buick?
B2252 indicates a fault in the left key cylinder switch, which is responsible for detecting the position of the key in the ignition.
2. What are the common symptoms of a B2252 code in a Buick?
Symptoms may include failure to detect the key position, issues starting the vehicle, or the ignition switch feeling loose or unresponsive.
3. What causes the B2252 code to appear?
The code can be triggered by a faulty key cylinder switch, damaged wiring, loose connections, or a malfunctioning ignition lock cylinder.
4. Can I still drive my Buick with a B2252 code?
While the vehicle may still operate, the fault could eventually lead to ignition issues or starting failures. It’s best to address it promptly.
5. How do I diagnose a B2252 code in my Buick?
Diagnosis involves scanning the vehicle with an OBDII tool, inspecting the left key cylinder switch, checking for damaged wiring or loose connections, and testing the switch for proper function.
6. What repairs are needed to fix a B2252 code?
Repairs may include replacing the left key cylinder switch, repairing damaged wiring, reconnecting loose connectors, or, in some cases, replacing the ignition lock cylinder.
7. How much does it cost to repair a B2252 code on a Buick?
The cost can vary depending on the issue, but replacing the ignition switch or lock cylinder typically ranges from $150 to $400, including parts and labor.
8. Can a dead battery cause a B2252 code?
While a dead battery itself may not cause the code, low voltage or power surges during battery failure could potentially affect the key cylinder switch’s operation.
9. Will clearing the B2252 code with a scanner fix the problem?
Clearing the code will remove it temporarily, but if the underlying issue isn’t resolved, the code will return.
10. Is the B2252 code specific to Buicks only?
No, the B2252 code can appear on other GM vehicles, but it specifically pertains to the left key cylinder switch fault in those models.
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