P1626 Buick Code - Theft Deterrent Fuel Enable Signal Not Received
Quick Answer
The Body Control Module (BCM) produces the theft deterrent fuel enable signal when the ignition is ON and the proper key resistor pellet is sensed. Common causes include Faulty ignition switch, Ignition switch harness is open or shorted, ignition 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
- P1626 Buick indicates Theft Deterrent Fuel Enable Signal Not Received.
- Common causes
- Common causes include Faulty ignition switch, Ignition switch harness is open or shorted, ignition 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 P1626 Buick Description
What are the Possible Causes of the DTC P1626 Buick?
- Faulty ignition switch
- Ignition switch harness is open or shorted
- ignition switch circuit poor electrical connection
- Incorrect ignition key
How to Fix the DTC P1626 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 P1626 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 P1626 Buick Code
What does the OBDII code P1626 mean on a Buick?
Code P1626 indicates that the Theft Deterrent Fuel Enable signal was not received by the engine control module (ECM), which could prevent the engine from starting or running.
What are the common symptoms of code P1626 in a Buick?
Symptoms include the engine not starting, the security light staying illuminated on the dashboard, and the vehicle possibly stalling shortly after starting.
What causes the P1626 code to appear on a Buick?
Common causes include a faulty passlock sensor, damaged wiring in the theft deterrent system, a malfunctioning body control module (BCM), or communication issues between the BCM and ECM.
Can a weak or dead battery trigger the P1626 code?
Yes, a weak or dead battery can cause communication issues within the theft deterrent system, potentially triggering the P1626 code.
How do you troubleshoot the P1626 code on a Buick?
Check for other related codes, inspect the passlock sensor and wiring, ensure the battery is fully charged, and test communication between the BCM and ECM.
Can the P1626 code cause the engine to stall while driving?
Yes, if the theft deterrent system fails to send the Fuel Enable signal, the engine may stall or shut off while driving.
How do you fix the P1626 code on a Buick?
Repairs may include replacing the passlock sensor, fixing damaged wiring or connectors, reprogramming or replacing the BCM, or clearing the code after addressing the root cause.
Is the P1626 code specific to Buick vehicles?
No, while P1626 is common in Buicks, it can also appear in other GM vehicles with similar theft deterrent systems.
Can I bypass the theft deterrent system to resolve the P1626 code?
Bypassing the system is not recommended as it compromises vehicle security. It's better to repair the system to restore proper functionality.
How much does it cost to fix a P1626 code on a Buick?
Repair costs vary depending on the issue but can range from $100 to $500, including diagnostics, replacement parts, and labor.
Discuss the causes and fixes for P1626 Buick OBDII Code
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