AutoCodes – Saab – P1491 Saab

P1491 Saab Code - Evaporative Emission Pressure Sensor / Fuel Tank Level Sensor In Fuel Tank - Range / Performance Problem / Malfunction

Quick Answer

P1491 Saab indicates Evaporative Emission Pressure Sensor / Fuel Tank Level Sensor In Fuel Tank - Range / Performance Problem / Malfunction. Common causes include Faulty Evaporative Emission Pressure Sensor, Evaporative Emission Pressure Sensor harness is open or shorted, Evaporative Emission Pressure Sensor circuit poor electrical connection. 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: P1491 Saab indicates Evaporative Emission Pressure Sensor / Fuel Tank Level Sensor In Fuel Tank - Range / Performance Problem / Malfunction.
Common causes: Common causes include Faulty Evaporative Emission Pressure Sensor, Evaporative Emission Pressure Sensor harness is open or shorted, Evaporative Emission Pressure Sensor circuit poor electrical connection.
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 1,740

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 25, 2019

Description
Step-by-Step Diagnostic Guide
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P1491 Saab Description

OBDII Code P1491 Saab - Evaporative Emission Pressure Sensor / Fuel Tank Level Sensor In Fuel Tank - Range / Performance Problem / Malfunction - AutoCodes.com — P1491 Saab Code - Evaporative Emission Pressure Sensor / Fuel Tank Level Sensor In Fuel Tank - Range / Performance Problem / Malfunction

What does this mean?

What are the Possible Causes of the DTC P1491 Saab?

Faulty Evaporative Emission Pressure Sensor
Evaporative Emission Pressure Sensor harness is open or shorted
Evaporative Emission Pressure Sensor circuit poor electrical connection

How to Fix the DTC P1491 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 P1491 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.

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Need more information on how to fix the P1491 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 P1491 Saab Code

1. What are common symptoms of OBDII code P1491 in a Saab?

- Common symptoms include the check engine light coming on, rough idling, decreased fuel efficiency, and potential difficulty starting the vehicle.

2. What causes OBDII code P1491 in a Saab?

- This code is commonly triggered by a malfunction in the evaporative emission pressure sensor or fuel tank level sensor located in the fuel tank. It can be caused by sensor failures, wiring issues, or fuel tank problems.

3. How can I diagnose OBDII code P1491 in my Saab?

- Diagnosis involves using an OBDII scanner to retrieve the fault code and then inspecting the evaporative emission system components, including the pressure sensor and fuel tank level sensor, for any damage or malfunction.

4. Can I continue driving my Saab with OBDII code P1491?

- It is not recommended to continue driving your vehicle with this code present, as it can lead to more serious issues and potentially affect the performance of the vehicle.

5. How do I repair OBDII code P1491 in a Saab?

- Repair typically involves replacing the faulty evaporative emission pressure sensor or fuel tank level sensor. In some cases, wiring repairs or fuel tank repairs may be necessary.

6. Are there any DIY tips for fixing OBDII code P1491 in a Saab?

- DIY repairs for this code can be challenging due to the location of the sensors in the fuel tank. It is recommended to consult a professional mechanic for proper diagnosis and repair.

7. Will resetting the OBDII code P1491 in my Saab make it go away permanently?

- Simply resetting the code may temporarily turn off the check engine light, but if the underlying issue is not addressed, the code is likely to reappear.

8. How much does it cost to repair OBDII code P1491 in a Saab?

- The cost of repair can vary depending on the extent of the issue and parts/labour costs. It is advisable to get a quote from a trusted mechanic or dealership.

9. Can a faulty gas cap trigger OBDII code P1491 in a Saab?

- While a faulty gas cap can trigger evaporative emission system codes, OBDII code P1491 specifically relates to issues with the pressure sensor or fuel level sensor in the fuel tank.

10. Is OBDII code P1491 in a Saab an urgent issue that needs immediate attention?

- While the vehicle may still be operable with this code present, it is recommended to address the issue promptly to prevent further damage and ensure optimal performance.