AutoCodes – Ford – P0603 1997 Ford F150

P0603 1997 Ford F150 Code - Powertrain Control Module KAM Test Error

Quick Answer

Battery voltage is supplied to the ECM even when the ignition switch is turned OFF for the ECM memory function of the DTC memory, the air-fuel ratio feedback compensation value memory, the idle air volume learning value memory, etc. Common causes include Loose or poor battery terminal connection, Low battery charge (Battery terminal corrosion), ECM power supply circuit is open or shorted. 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: P0603 1997 Ford F150 indicates Powertrain Control Module KAM Test Error .
Common causes: Common causes include Loose or poor battery terminal connection, Low battery charge (Battery terminal corrosion), ECM power supply circuit is open or shorted.
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 4,118

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 Jun 14, 2020

Description
Step-by-Step Diagnostic Guide
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code P0603 1997 Ford F150 Description

OBDII Code P0603 1997 Ford F150 - Powertrain Control Module KAM Test Error - AutoCodes.com — P0603 1997 Ford F150 Code - Powertrain Control Module KAM Test Error

What does this mean?

What are the Possible Causes of the DTC P0603 1997 Ford F150?

Loose or poor battery terminal connection
Low battery charge (Battery terminal corrosion)
ECM power supply circuit is open or shorted
ECM Programing
Faulty PCM

How to Fix the DTC P0603 1997 Ford F150?

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

Start by charging the vehicles battery and clean terminal, once the battery is charged and the terminals are clean and secure, erase code. If the code comes back ON you may have to reprogram or replaced ECM

Indicates the PCM has experienced an internal memory fault. However there are external items that can cause this DTC.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0603 1997 Ford F150 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 P0603 1997 Ford F150 code?

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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 P0603 1997 Ford F150 Code

1. What is the OBDII code P0603 for a 1997 Ford F150?

The OBDII code P0603 indicates a Powertrain Control Module Keep Alive Memory (KAM) Test Error on a 1997 Ford F150.

2. What are the common symptoms of a P0603 error on a 1997 Ford F150?

Common symptoms of a P0603 error may include engine stalling, rough idling, poor acceleration, and the illumination of the Check Engine Light.

3. What are the possible causes of a P0603 error on a 1997 Ford F150?

Possible causes of a P0603 error include a faulty Powertrain Control Module (PCM), a corrupted software program within the PCM, or issues with the vehicle's battery or electrical system.

4. How can I diagnose a P0603 error on my 1997 Ford F150?

To diagnose a P0603 error, a professional mechanic can use a scan tool to retrieve the specific error code and then perform further testing to identify the underlying cause.

5. Can I drive my 1997 Ford F150 with a P0603 error?

It is not recommended to drive your vehicle with a P0603 error, as it can cause engine performance issues and potentially lead to further damage. It's best to address the issue promptly.

6. How can I repair a P0603 error on my 1997 Ford F150?

Repairing a P0603 error may involve reprogramming or replacing the Powertrain Control Module (PCM), addressing any underlying electrical issues, and clearing the error code from the system.

7. Is a P0603 error on a 1997 Ford F150 a serious issue?

A P0603 error should be addressed promptly, as it can affect the performance and reliability of your vehicle. Ignoring the issue may lead to more severe problems over time.

8. Can a DIY enthusiast fix a P0603 error on a 1997 Ford F150?

While some basic troubleshooting steps can be taken by a DIY enthusiast, resolving a P0603 error often requires advanced diagnostic tools and expertise. It's recommended to seek professional help.

9. How much does it cost to repair a P0603 error on a 1997 Ford F150?

The cost of repairing a P0603 error can vary depending on the specific cause of the issue, the extent of the repairs needed, and labor rates in your area. It's best to consult with a mechanic for an accurate estimate.

10. Will resetting the PCM clear a P0603 error on a 1997 Ford F150?

Resetting the PCM may temporarily clear the error code, but if the underlying issue is not addressed, the P0603 error is likely to return. It's important to diagnose and repair the root cause of the problem.