AutoCodes – Dodge – P1002 Dodge

P1002 Dodge Code - Ignition Key Off Timer Performance Too Slow

Quick Answer

The Transmission Control Module (TCM) uses ignition off time to enable other diagnostic tests. 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: P1002 Dodge indicates Ignition Key Off Timer Performance Too Slow.
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 8,912

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 Aug 13, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P1002 Dodge Description

The Transmission Control Module (TCM) uses ignition off time to enable other diagnostic tests. The TCM must verify the proper operation of the ignition off timer to ensure the diagnostic tests are performed within the proper enable conditions. The ignition off timer value is stored in the Cabin Compartment Node (CCN). The CCN will send the ignition off time message to the Totally Integrated Power Module (TIPM). The TIPM broadcasts the ignition off time over the CAN bus. The TCM receives the message and then compares the ignition off timer value to the Engine Coolant Ignition off temperature and the Engine Coolant Start-up Temperature message. The Diagnostic Trouble Code (DTC) will set if the ignition off time is less than a calibrated value based on Engine Coolant Ignition off Temperature and the Engine Coolant Start-up Temperature.

OBDII Code P1002 Dodge - Ignition Key Off Timer Performance Too Slow - AutoCodes.com — P1002 Dodge Code - Ignition Key Off Timer Performance Too Slow

What does this mean?

What are the Possible Causes of the DTC P1002 Dodge?

Faulty Ignition Switch
Ignition Switch harness is open or shorted
Ignition Switch circuit poor electrical connection
Faulty Cabin Compartment Node (CCN)

How to Fix the DTC P1002 Dodge?

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 P1002 Dodge 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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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 P1002 Dodge Code

What does the OBDII code P1002 mean on a Dodge vehicle?

P1002 indicates an issue with the Ignition Key Off Timer Performance, where the system is taking too long to shut down after the ignition key is turned off.

What are the common symptoms of the P1002 code on a Dodge?

Symptoms may include extended battery drain after the vehicle is turned off, erratic electrical behavior, or warning lights remaining on after the ignition is switched off.

What causes the P1002 code to appear?

Possible causes include a malfunctioning ignition switch, a short or open circuit in the ignition timer system, or issues with the battery or wiring connections.

Can the P1002 code cause long-term damage to my Dodge?

If unresolved, the code can lead to battery drainage, potentially leaving you stranded with a dead battery. Long-term electrical issues can also arise.

How can I diagnose the P1002 code?

Use an OBDII scanner to confirm the code, then inspect the ignition switch, wiring, and battery for faults. Check the timer circuit for performance issues.

How do I fix the P1002 code on a Dodge vehicle?

Repairs may involve replacing the ignition switch, repairing damaged wiring, or addressing battery-related issues. Ensure all connections are secure and functioning properly.

Can a weak battery trigger the P1002 code?

Yes, a weak or failing battery can disrupt the ignition key off timer performance, causing the system to malfunction and trigger the code.

Is it safe to drive my Dodge with the P1002 code active?

While the vehicle may still operate, the code indicates potential electrical issues that could lead to a dead battery or other complications, so prompt repair is recommended.

Will clearing the P1002 code solve the problem?

Clearing the code may temporarily remove the warning, but unless the underlying issue is resolved, the code is likely to return.

Should I consult a professional mechanic for the P1002 code?

If you're unable to pinpoint the cause or repair the issue yourself, it’s best to consult a professional mechanic to avoid further damage or complications.