AutoCodes – Scion – P1604 Scion

P1604 Scion Code - Startability Malfunction

Quick Answer

The P1604 code is stored if the engine does not start or when the engine takes a long time to start, and when the engine speed is low or the engine stalls just after the engine starts. Common causes include Low Battery charge, Starting system, Low quality fuel. 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: P1604 Scion indicates Startability Malfunction.
Common causes: Common causes include Low Battery charge, Starting system, Low quality fuel.
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 16,310

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 Sep 06, 2022

Description
Step-by-Step Diagnostic Guide
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P1604 Scion Description

The P1604 code is stored if the engine does not start or when the engine takes a long time to start, and when the engine speed is low or the engine stalls just after the engine starts. The P1604 code is also stored if the vehicle has run out of fuel. It is necessary to check whether there was enough fuel in the fuel tank before performing this inspection.

OBDII Code P1604 Scion - Startability Malfunction - AutoCodes.com — P1604 Scion Code - Startability Malfunction

What does this mean?

What are the Possible Causes of the DTC P1604 Scion?

Low Battery charge
Starting system
Low quality fuel
Clogged Fuel filter
Faulty Engine Control Module (ECM)

How to Fix the DTC P1604 Scion?

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 P1604 Scion 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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Need more information on how to fix the P1604 Scion code? Get Access to Factory Service Manuals

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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 P1604 Scion Code

1. What are the common symptoms of OBDII code P1604 in a Scion?

Symptoms may include difficulty starting the vehicle, intermittent stalling, and reduced engine performance.

2. What does the OBDII code P1604 in a Scion indicate?

P1604 typically indicates a startability malfunction, which is related to the vehicle's ability to start and run smoothly.

3. What are the possible causes of OBDII code P1604 in a Scion?

Potential causes include a faulty starter motor, issues with the ignition system, wiring problems, or a malfunctioning engine control module (ECM).

4. How can I diagnose the OBDII code P1604 in my Scion?

Diagnosis usually involves using a scan tool to retrieve the trouble code and then performing a thorough inspection of the starting system components and related wiring.

5. Can I still drive my Scion with OBDII code P1604?

It is not recommended to drive the vehicle with this code present, as it can lead to further damage or safety issues if the underlying cause is not addressed promptly.

6. How can I repair OBDII code P1604 in my Scion?

Repairing P1604 may involve replacing the starter motor, repairing the ignition system, fixing wiring issues, or reprogramming the ECM. It is advisable to consult a professional mechanic for proper diagnosis and repair.

7. Is it safe to reset the OBDII code P1604 in my Scion using a scan tool?

Resetting the code may temporarily turn off the check engine light, but it will not fix the underlying issue causing the startability malfunction. It is crucial to address the root cause of the problem to prevent future issues.

8. Can a DIY enthusiast fix OBDII code P1604 in a Scion?

While some basic troubleshooting steps can be performed by a DIY enthusiast, diagnosing and repairing this code may require advanced knowledge and specialized tools. Seeking professional help is recommended for an accurate and effective repair.

9. How much does it cost to fix OBDII code P1604 in a Scion?

The cost of repairing P1604 can vary depending on the specific cause of the issue, labor rates in your area, and the parts needed for the repair. It is advisable to obtain quotes from different mechanics to compare prices.

10. How can I prevent OBDII code P1604 from occurring in my Scion?

Regular maintenance, such as checking the starter motor, ignition system, and wiring for any signs of wear or damage, can help prevent issues that may trigger the startability malfunction indicated by code P1604.