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Engine-Codes – Generic – P1002

P1002 Code - Ignition Key Off Timer Performance Too Slow

Quick Answer

The P1002 diagnostic trouble code (DTC) indicates that the ignition key off timer performance is too slow. Common causes include Faulty keyless entry system sensors, Malfunctioning ignition switch, Wiring issues. 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
P1002 indicates Ignition Key Off Timer Performance Too Slow.
Common causes
Common causes include Faulty keyless entry system sensors, Malfunctioning ignition switch, Wiring issues.
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.
What is this?
Table of contents Created and updated by William Orellana on Sep 07, 2024
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Code P1002 Description

The P1002 diagnostic trouble code (DTC) indicates that the ignition key off timer performance is too slow. This code is typically found in vehicles equipped with advanced keyless entry systems. When the ignition key is turned off, the keyless entry system is designed to deactivate and shut down within a specific time frame. However, if the system takes longer than expected to deactivate after the key is turned off, the P1002 code is triggered.

OBDII Code P1002 - Ignition Key Off Timer Performance Too Slow
P1002 Code - Ignition Key Off Timer Performance Too Slow

Common Causes of P1002

  1. Faulty keyless entry system sensors
  2. Malfunctioning ignition switch
  3. Wiring issues
  4. Communication error between keyless entry system and vehicle's computer

Symptoms of P1002

  1. Increased battery drain: The vehicle's battery may drain faster than usual due to the prolonged activation of the keyless entry system.
  2. Keyless entry system malfunctions: The keyless entry system may not function properly, such as difficulty locking or unlocking the doors.
  3. Warning lights: The vehicle's dashboard may display warning lights related to the keyless entry system or electrical system.
  4. Starting issues: The vehicle may experience difficulty starting due to a drained battery caused by the prolonged activation of the keyless entry system.

How to Fix P1002

  1. Diagnose the issue: Use a diagnostic tool to retrieve the DTC and pinpoint the exact cause of the slow ignition key off timer performance.
  2. Inspect keyless entry system components: Check the keyless entry system sensors, ignition switch, and wiring for any signs of damage or malfunction.
  3. Repair or replace faulty components: Replace any faulty sensors, repair wiring issues, or replace the ignition switch if necessary.
  4. Reset the system: Reset the keyless entry system to ensure it deactivates properly after the ignition key is turned off.
  5. Test the system: Test the keyless entry system to ensure it deactivates within the expected time frame.

Cost to Fix P1002

The typical repair costs for addressing a P1002 code can vary depending on the specific cause of the issue and the vehicle's make and model. In general, the cost of parts and labor for diagnosing and repairing this issue can range from $150 to $500. It's important to note that labor rates at auto repair shops can vary, with hourly rates typically ranging from $80 to $150. Additional costs may apply for any necessary replacement parts or further diagnostics. It's recommended to consult with a qualified mechanic or auto repair shop for a more accurate cost estimate based on your vehicle's specific needs.

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Code P1002 Information for Specific Makes

  • P1002 Buick — Fuel Pump Driver Control Module System Voltage Performance
  • P1002 Cadillac — Fuel Pump Driver Control Module System Voltage Performance
  • P1002 Chevrolet — Fuel Pump Driver Control Module System Voltage Performance
  • P1002 Chrysler — Ignition Key Off Timer Performance Too Slow
  • P1002 Dodge — Ignition Key Off Timer Performance Too Slow
  • P1002 GMC — Fuel Pump Driver Control Module System Voltage Performance
  • P1002 Jeep — Ignition Key Off Timer Performance Too Slow
  • P1002 Saab — Evaporative Emission Canister Purge Valve High Output
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.

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