AutoCodes – Saab – P1392 Saab

P1392 Saab Code - Cylinder 2 Misfire Detected Random Fuel Level Low

Quick Answer

P1392 Saab indicates Cylinder 2 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: P1392 Saab indicates Cylinder 2 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 2,516

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 P1392 Saab Description

OBDII Code P1392 Saab - Cylinder 2 Misfire Detected Random Fuel Level Low - AutoCodes.com — P1392 Saab Code - Cylinder 2 Misfire Detected Random Fuel Level Low

What does this mean?

What are the Possible Causes of the DTC P1392 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 P1392 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 P1392 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 P1392 Saab code?

Need more information on how to fix the P1392 Saab 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 P1392 Saab Code

1. What does the OBDII code P1392 mean on a Saab?

The P1392 code in a Saab indicates that the engine control module (ECM) has detected a misfire in cylinder 2 and the fuel level is reported as low.

2. What are the symptoms of code P1392 in a Saab?

Symptoms may include rough idling, engine hesitation or stalling, a decrease in engine performance, and the Check Engine light being illuminated.

3. What could cause the P1392 code in a Saab?

Possible causes include low fuel level, faulty spark plugs or wires, a bad ignition coil, issues with the fuel injector, or a compression problem in cylinder 2.

4. How can I fix the P1392 code on a Saab?

To fix this code, start by checking the fuel level and refilling if necessary. Inspect the spark plugs, ignition wires, and coils for damage or wear. Also, check the fuel injector for proper operation. It may be necessary to perform a compression test to diagnose further.

5. Is it safe to drive a Saab with code P1392?

Driving with an active misfire can cause further damage to the engine and other components like the catalytic converter. It is advisable to address the issue promptly to avoid additional repairs.

6. How do I diagnose a P1392 code in a Saab?

Begin by using an OBDII scanner to confirm the code. Check the fuel level and inspect the ignition components specific to cylinder 2, including spark plugs, wires, and coil. Also, test the fuel injector functionality and check for any compression issues in the cylinder.

7. What tools are needed to diagnose the P1392 code in a Saab?

You will need an OBDII scan tool, a multimeter, and possibly a compression tester to diagnose this issue effectively. Basic hand tools may also be needed to access and inspect various components.

8. Can a low fuel level trigger the P1392 code in a Saab?

Yes, a significantly low fuel level can contribute to engine misfire conditions, which might trigger the P1392 code. Ensuring a proper fuel level can help in preventing misfires related to fuel supply.

9. What should I check first if my Saab shows the P1392 code?

First, ensure that the fuel tank is adequately filled. Then, inspect the spark plug and ignition coil for cylinder 2. These are common culprits for misfires and are relatively straightforward to check and replace if necessary.