AutoCodes – Ford – P0605 1998 Ford F150

P0605 1998 Ford F150 Code - PCM Read Only Memory Error

Quick Answer

The Powertrain Control Module (PCM) continuously monitors its own internal memory status, internal circuits, and output signals transmitted to the throttle actuator. Common causes include Powertrain Control Module (PCM) programming error, Physically damaged Powertrain Control Module, Faulty Powertrain Control Module. 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: P0605 1998 Ford F150 indicates PCM Read Only Memory Error .
Common causes: Common causes include Powertrain Control Module (PCM) programming error, Physically damaged Powertrain Control Module, Faulty Powertrain Control Module.
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 2,439

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 30, 2020

Description
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code P0605 1998 Ford F150 Description

The Powertrain Control Module (PCM) continuously monitors its own internal memory status, internal circuits, and output signals transmitted to the throttle actuator. This self-check insures that the Powertrain Control Module is functioning properly. The Diagnostic Trouble Code (DTC) will set when the Powertrain Control Module Read Only Memory (ROM) has been corrupted.

OBDII Code P0605 1998 Ford F150 - PCM Read Only Memory Error - AutoCodes.com — P0605 1998 Ford F150 Code - PCM Read Only Memory Error

What does this mean?

What are the Possible Causes of the DTC P0605 1998 Ford F150?

Powertrain Control Module (PCM) programming error
Physically damaged Powertrain Control Module
Faulty Powertrain Control Module
Powertrain Control Module harness is open or shorted
Powertrain Control Module circuit poor electrical connection

How to Fix the DTC P0605 1998 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

Try clearing the code before replacing any parts. Reprogram the Vehicle Identification (VID) block (use as built data). Check for other Diagnostic Trouble Code (DTC) or drive symptoms for further action. Make sure to check for aftermarket performance products before installing a new Powertrain Control Module (PCM).

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0605 1998 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 P0605 1998 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 P0605 1998 Ford F150 Code

1. What does the OBDII code P0605 mean on a 1998 Ford F150?

P0605 indicates a "PCM Read Only Memory (ROM) Error," meaning there is an issue with the PCM's internal memory.

2. What are the common symptoms of a P0605 code in a 1998 Ford F150?

Symptoms may include engine stalling, poor performance, difficulty starting, a check engine light, or the vehicle entering limp mode.

3. What causes the P0605 code on a 1998 Ford F150?

The code can be caused by a faulty PCM, corrupted software, electrical issues like wiring or connector problems, or voltage irregularities.

4. Can a bad battery cause the P0605 code on a Ford F150?

Yes, a weak or failing battery can cause voltage fluctuations that may trigger the P0605 code.

5. How do I diagnose the P0605 code on my 1998 Ford F150?

Start by checking the battery and charging system, inspect PCM wiring and connectors for damage, and verify the code with a diagnostic scanner.

6. Can I still drive my 1998 Ford F150 with the P0605 code?

Itâ€™s not recommended to drive the vehicle, as it may enter limp mode or have unpredictable performance issues.

7. Does the P0605 code always mean the PCM needs to be replaced?

No, the issue could be related to wiring, a software update, or power supply issues, so the PCM should only be replaced after proper diagnosis.

8. How much does it cost to fix a P0605 code on a 1998 Ford F150?

Costs vary depending on the cause, but PCM replacement can range from $500 to $1,200, while wiring or software repairs may cost less.

9. Can resetting the PCM fix the P0605 code on a 1998 Ford F150?

Resetting the PCM may temporarily clear the code, but if the underlying issue isnâ€™t resolved, the code will likely return.

10. Is the P0605 code common on 1998 Ford F150 vehicles?

Itâ€™s not a common issue but can occur due to aging components or electrical problems in older vehicles like the 1998 Ford F150.

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