AutoCodes – Saab – P1042 Saab

P1042 Saab Code - Injector 4 High Output

Quick Answer

The Engine Control Module (ECM) monitors the Injector 4. Common causes include Faulty injector 4, Injector 4 harness is open or shorted, Injector 4 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: P1042 Saab indicates Injector 4 High Output.
Common causes: Common causes include Faulty injector 4, Injector 4 harness is open or shorted, Injector 4 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 4,278

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 Aug 19, 2022

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P1042 Saab Description

The Engine Control Module (ECM) monitors the Injector 4. The ECM sets the Diagnostic Trouble Code (DTC) when the Injector 4 is not to factory specifications.

OBDII Code P1042 Saab - Injector 4 High Output - AutoCodes.com — P1042 Saab Code - Injector 4 High Output

What does this mean?

What are the Possible Causes of the DTC P1042 Saab?

Faulty injector 4
Injector 4 harness is open or shorted
Injector 4 circuit poor electrical connection

How to Fix the DTC P1042 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 P1042 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 Help with the 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 P1042 Saab Code

1. What are the common symptoms of OBDII code P1042 (Injector 4 High Output) in a Saab?

- Common symptoms include rough idling, misfires, decreased fuel efficiency, and potential engine stall.

2. What are the possible causes of OBDII code P1042 in a Saab?

- The code P1042 can be triggered by issues such as a faulty fuel injector, wiring problems, a malfunctioning engine control module (ECM), or a vacuum leak.

3. How can I diagnose the cause of OBDII code P1042 in my Saab?

- To diagnose the issue, you can perform a visual inspection of the fuel injector and its wiring, check for vacuum leaks, test the fuel injector resistance, and scan the ECM for error codes.

4. Can a dirty fuel injector cause OBDII code P1042 in a Saab?

- Yes, a dirty or clogged fuel injector can lead to an imbalance in fuel delivery, potentially triggering the P1042 code.

5. Is it safe to continue driving my Saab with OBDII code P1042 (Injector 4 High Output)?

- It is not recommended to continue driving your vehicle with this code as it can lead to further engine damage and potential safety hazards.

6. How can I repair OBDII code P1042 in my Saab?

- Repair options may include cleaning or replacing the fuel injector, repairing damaged wiring, fixing vacuum leaks, or replacing the ECM if necessary.

7. Can I reset the OBDII code P1042 in my Saab with a simple reset tool?

- While you can clear the code with an OBDII scanner, it is important to address the underlying issue causing the code to prevent it from reoccurring.

8. Will replacing all fuel injectors solve OBDII code P1042 in a Saab?

- Replacing all fuel injectors may not be necessary. It is recommended to diagnose the specific issue with Injector 4 before considering a replacement.

9. How much does it typically cost to repair OBDII code P1042 in a Saab?

- The cost of repairing this code can vary depending on the cause of the issue. It is best to consult with a mechanic for a proper diagnosis and cost estimate.

10. Can a DIY enthusiast fix OBDII code P1042 in a Saab, or is it best left to professionals?

- While some aspects of diagnosing and repairing this code can be done by a DIY enthusiast, complex issues may require the expertise of a professional mechanic to ensure proper resolution.