AutoCodes – Generic – P1626

P1626 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 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.

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Code Popularity 38,708

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Sep 01, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P1626 Description

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. The Powertrain Control Module (PCM) monitors the fuel enable signal during crank. If the proper signal is present on the theft deterrent fuel enable circuit, the PCM enables fuel delivery to allow the engine to start. If the PCM detects that the fuel enables signal is not present or incorrect while the engine is running, DTC P1626 will be set. DTC P1626 can cause a no-start condition or normal operation depending on when the loss of the fuel enable signal was detected. The engine will continue to start and run if the condition that set DTC P1626 occurred after the BCM sensed the proper key resistor pellet and signaled the PCM to continue fuel delivery. The engine will start and immediately stall if the condition that set DTC P1626 occurred before the BCM sensed the proper key resistor pellet. With this condition present, the PCM will inhibit fuel delivery and the BCM will disable the starter.

OBDII Code P1626 - Theft Deterrent Fuel Enable Signal Not Received - AutoCodes.com — P1626 Code - Theft Deterrent Fuel Enable Signal Not Received

What does this mean?

What are the Possible Causes of the DTC P1626?

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?

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 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.

Need more information about the P1626 code?

Need more information on how to fix the P1626 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P1626 code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

P1626 Audi — CAN Data Bus TCM Incorrect Signal
P1626 Buick — Theft Deterrent Fuel Enable Signal Not Received
P1626 Cadillac — Theft Deterrent Fuel Enable Signal Not Received
P1626 Chevrolet — Theft Deterrent Fuel Enable Signal Not Received
P1626 Dodge — Speed Control Switch Always Low
P1626 Ford — Voltage to Vehicle Load Control Module Circuit Not detected
P1626 GMC — Theft Deterrent Fuel Enable Signal Not Received
P1626 Hyundai — Immobilizer Indicator Malfunction
P1626 Isuzu — Immobilizer System Engine Control Module To Body Control Module Communication Malfunction
P1626 Oldsmobile — Theft Deterrent Fuel Enable Signal Not Received
P1626 Pontiac — Theft Deterrent Fuel Enable Signal Not Received
P1626 Saturn — Theft Deterrent Fuel Enable Signal Not Received
P1626 Volkswagen — CAN Data Bus TCM Incorrect Signal

About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about P1626 Code

1. What are the common symptoms of OBDII code P1626?

- Common symptoms include difficulty starting the vehicle, stalling, and the inability to start the engine.

2. What does the OBDII code P1626 indicate?

- The code P1626 indicates that the Theft Deterrent System is not receiving the necessary signal to enable the fuel system.

3. What are the possible causes of OBDII code P1626?

- Possible causes include a faulty ignition key, issues with the key transponder, wiring problems, or a malfunction in the Theft Deterrent Module.

4. How can I diagnose the cause of OBDII code P1626?

- Diagnosis typically involves checking the key for proper programming, inspecting the wiring for damage, and using a scan tool to communicate with the Theft Deterrent Module.

5. Is it safe to continue driving with OBDII code P1626?

- It is not recommended to continue driving with this code as it may lead to unexpected stalling or starting issues.

6. Can I repair OBDII code P1626 on my own?

- Depending on the cause, some DIY repairs may be possible, such as checking and reprogramming the key or repairing damaged wiring. However, complex issues may require professional assistance.

7. How much does it typically cost to repair OBDII code P1626?

- Repair costs can vary widely depending on the cause of the issue. Simple fixes like reprogramming a key may cost less, while replacing a faulty module can be more expensive.

8. Will resetting the OBDII code P1626 solve the issue?

- Resetting the code may temporarily clear the error, but if the underlying problem is not addressed, the code is likely to reappear.

9. Can extreme weather conditions trigger OBDII code P1626?

- Extreme weather conditions can potentially affect the performance of the key transponder or wiring, leading to issues with the Theft Deterrent System.

10. How can I prevent OBDII code P1626 from recurring?

- Regular maintenance, such as checking key functionality and ensuring proper wiring connections, can help prevent the recurrence of this code.