AutoCodes – Dodge – P0633 Dodge

P0633 Dodge Code - SKIM Secret Key Not Stored In PCM

Quick Answer

The Diagnostic Trouble Code (DTC) will be set when the Sentry Key Immobilizer Module (SKIM) Secret Key is not programmed into the Powertrain Control Module (PCM). Common causes include Secret Key code failed to transfer to Powertrain Control Module (PCM), High or low battery voltage, No communication with Body Control Module (BCM). 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: P0633 Dodge indicates SKIM Secret Key Not Stored In PCM.
Common causes: Common causes include Secret Key code failed to transfer to Powertrain Control Module (PCM), High or low battery voltage, No communication with Body Control Module (BCM).
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 30,101

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 Jul 16, 2022

Description
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
Comments
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Code P0633 Dodge Description

The Diagnostic Trouble Code (DTC) will be set when the Sentry Key Immobilizer Module (SKIM) Secret Key is not programmed into the Powertrain Control Module (PCM).

OBDII Code P0633 Dodge - SKIM Secret Key Not Stored In PCM - AutoCodes.com — P0633 Dodge Code - SKIM Secret Key Not Stored In PCM

What does this mean?

What are the Possible Causes of the DTC P0633 Dodge?

Secret Key code failed to transfer to Powertrain Control Module (PCM)
High or low battery voltage
No communication with Body Control Module (BCM)
Faulty Powertrain Control Module

How to Fix the DTC P0633 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 does this mean?

Code Tech Notes

When a Powertrain Control Module (PCM) is replaced on vehicles equipped with the Sentry Keyâ„¢ Theft Deterrent System, it must be initialized to properly function with the anti-theft module. This is accomplished at a Chrysler Group Dealer by using the DRBIIIÂ® or StarSCANâ„¢ Scan Tool to enter a PIN number.
When the PIN number is not available from the vehicle owner or a Chrysler Group Scan Tool(s) is not available this can be accomplished by writing the Vehicle Identification Number (VIN) into the PCM using an after-market scan tool with a "VIN Write Function".

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0633 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.