AutoCodes – Saab – P1394 Saab

P1394 Saab Code - Cylinder 4 Misfire Detected Random Fuel Level Low

Quick Answer

P1394 Saab indicates Cylinder 4 Misfire Detected Random Fuel Level Low. Common causes include Low fuel level, Faulty fuel injector, Fuel injector harness 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: P1394 Saab indicates Cylinder 4 Misfire Detected Random Fuel Level Low.
Common causes: Common causes include Low fuel level, Faulty fuel injector, Fuel injector harness 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 2,514

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

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Table of contents Created and updated by William Orellana on Aug 17, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P1394 Saab Description

OBDII Code P1394 Saab - Cylinder 4 Misfire Detected Random Fuel Level Low - AutoCodes.com — P1394 Saab Code - Cylinder 4 Misfire Detected Random Fuel Level Low

What does this mean?

What are the Possible Causes of the DTC P1394 Saab?

Low fuel level
Faulty fuel injector
Fuel injector harness is open or shorted
Fuel Injector circuit poor electrical connection

How to Fix the DTC P1394 Saab?

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 P1394 Saab 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 P1394 Saab code?

Need more information on how to fix the P1394 Saab code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P1394 Saab code diagnosed by a professional: Find a repair shop in your area

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 P1394 Saab Code

1. What are the common symptoms of OBDII code P1394 in a Saab indicating Cylinder 4 misfire and low fuel level?

- Common symptoms include engine misfires, rough idling, loss of power, and a low fuel level warning light.

2. What are the possible causes of OBDII code P1394 in a Saab related to Cylinder 4 misfire and low fuel level?

- Possible causes include a faulty ignition coil, spark plug, fuel injector, vacuum leak, low fuel pressure, or a malfunctioning fuel pump.

3. How can I diagnose the source of the Cylinder 4 misfire in my Saab triggering code P1394?

- To diagnose the issue, you can perform a visual inspection of the ignition components, check for vacuum leaks, test the fuel pressure, and use a scan tool to monitor live data while the engine is running.

4. What steps can I take to repair OBDII code P1394 in my Saab with Cylinder 4 misfire and low fuel level?

- Repair may involve replacing the faulty ignition coil, spark plug, fuel injector, or fixing any vacuum leaks. Ensure the fuel pressure is within specifications, and the fuel pump is functioning correctly.

5. Can a dirty or clogged fuel filter cause OBDII code P1394 in a Saab with Cylinder 4 misfire and low fuel level?

- Yes, a dirty or clogged fuel filter can restrict fuel flow to the engine, leading to a lean condition in Cylinder 4, causing misfires and potentially triggering the P1394 code.

6. Is it safe to continue driving my Saab with OBDII code P1394 indicating Cylinder 4 misfire and low fuel level?

- It is not recommended to drive your vehicle with unresolved misfires as it can cause further damage to the engine and decrease fuel efficiency. It's best to address the issue promptly.

7. Can a bad oxygen sensor trigger OBDII code P1394 in a Saab with Cylinder 4 misfire and low fuel level?

- While a faulty oxygen sensor can contribute to a lean or rich fuel mixture, it is less likely to directly cause a Cylinder 4 misfire. Focus on checking ignition and fuel components first.

8. How can I prevent OBDII code P1394 from recurring in my Saab after repairing the Cylinder 4 misfire and low fuel level issue?

- Regular maintenance, such as replacing spark plugs and ignition components at recommended intervals, monitoring fuel quality, and addressing any engine performance issues promptly, can help prevent code recurrence.

9. Will resetting the OBDII system clear code P1394 in my Saab with Cylinder 4 misfire and low fuel level, or should I address the underlying issue first?

- Resetting the system may temporarily clear the code, but it is essential to address the underlying issue causing the misfire and low fuel level to prevent the code from returning.

10. Can extreme weather conditions, such as cold temperatures, contribute to triggering OBDII code P1394 in a Saab with Cylinder 4 misfire and low fuel level?

- Extreme weather conditions can affect engine performance and exacerbate existing issues, such as misfires. Ensure your vehicle is properly maintained and consider weather-related factors when diagnosing the problem.