Engine-CodesCadillac – P1004 Cadillac

P1004 Cadillac Code - NOx Sensor 2 Slow Response

Quick Answer

The P1004 diagnostic trouble code for Cadillac vehicles refers to a NOx (Nitrogen Oxide) Sensor 2 Slow Response. Common causes include Faulty NOx sensor, Wiring or connector issues, Exhaust system leaks. 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
P1004 Cadillac indicates NOx Sensor 2 Slow Response.
Common causes
Common causes include Faulty NOx sensor, Wiring or connector issues, Exhaust system leaks.
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.
Table of contents Created and updated by William Orellana on Sep 06, 2024
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Code P1004 Cadillac Description

The P1004 diagnostic trouble code for Cadillac vehicles refers to a NOx (Nitrogen Oxide) Sensor 2 Slow Response. This code indicates that the NOx sensor, which is responsible for monitoring the levels of nitrogen oxides in the exhaust gases, is not responding as quickly as it should. NOx sensors are crucial for ensuring that the vehicle's emissions are within legal limits and that the catalytic converter is functioning properly.

OBDII Code P1004 Cadillac - NOx Sensor 2 Slow Response
P1004 Cadillac Code - NOx Sensor 2 Slow Response

Common Causes of P1004 Cadillac

  1. Faulty NOx sensor
  2. Wiring or connector issues
  3. Exhaust system leaks
  4. Engine misfire
  5. Fuel system problems

Symptoms of P1004 Cadillac

  1. Check Engine Light is illuminated
  2. Decreased fuel efficiency
  3. Poor engine performance
  4. Increased emissions
  5. Rough idling or stalling

How to Fix P1004 Cadillac

  1. Diagnose the issue using a scan tool to verify the NOx sensor 2 slow response code.
  2. Inspect the wiring and connectors for any damage or corrosion. Repair or replace as needed.
  3. Check for exhaust leaks and repair if necessary.
  4. Test the NOx sensor's operation and replace if it is faulty.
  5. Clear the trouble code and perform a test drive to ensure the issue has been resolved.

Cost to Fix P1004 Cadillac

The cost of repairing a NOx Sensor 2 Slow Response code can vary depending on the specific cause of the issue and the labor rates in your area. On average, the cost of replacing a NOx sensor ranges from $200 to $500, including parts and labor. Additional costs may apply if there are other underlying issues that need to be addressed. It's recommended to get quotes from different auto repair shops to find the best price for your specific vehicle.

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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 P1004 Cadillac Code

1. What are the common symptoms of OBDII code P1004 in a Cadillac related to NOx Sensor 2 Slow Response?

- Common symptoms may include decreased fuel efficiency, rough idling, loss of power, and the illumination of the check engine light.

2. What causes the OBDII code P1004 in a Cadillac indicating NOx Sensor 2 Slow Response?

- Possible causes include a faulty NOx sensor, wiring issues, exhaust system leaks, or a problem with the engine control module.

3. How serious is the OBDII code P1004 related to NOx Sensor 2 Slow Response in a Cadillac?

- While the vehicle may still be driveable with this code, it is important to address it promptly to prevent potential damage to the catalytic converter or other components.

4. Can I continue driving my Cadillac with the OBDII code P1004 indicating NOx Sensor 2 Slow Response?

- It is generally not recommended to drive with this code present, as it can affect the vehicle's performance and emissions. It is best to have the issue diagnosed and repaired as soon as possible.

5. How is the OBDII code P1004 related to NOx Sensor 2 Slow Response diagnosed in a Cadillac?

- Diagnosing this code typically involves using a scan tool to retrieve the specific code, checking the NOx sensor and related components for faults, and inspecting the wiring for any issues.

6. What are some repair tips for addressing the OBDII code P1004 in a Cadillac due to NOx Sensor 2 Slow Response?

- Repair tips may include replacing the faulty NOx sensor, repairing any wiring issues, fixing exhaust leaks, and resetting the engine control module after repairs are completed.

7. How much does it cost to repair the OBDII code P1004 related to NOx Sensor 2 Slow Response in a Cadillac?

- The cost of repairs can vary depending on the exact cause of the issue, but it may involve parts costs for a new NOx sensor, labor costs for diagnosis and repair, and potentially additional expenses for any related components that need attention.

8. Can a DIY enthusiast fix the OBDII code P1004 indicating NOx Sensor 2 Slow Response in a Cadillac?

- While some DIYers may have the skills to address this issue, it is recommended to consult a professional mechanic or technician for proper diagnosis and repair to ensure the problem is resolved correctly.

9. Will resetting the check engine light make the OBDII code P1004 related to NOx Sensor 2 Slow Response go away?

- Resetting the check engine light may temporarily clear the code, but if the underlying issue causing the code is not addressed, the light is likely to come back on as the problem persists.

10. Are there any recalls or technical service bulletins related to the OBDII code P1004 and NOx Sensor 2 Slow Response in Cadillac vehicles?

- It is advisable to check with a Cadillac dealership or the manufacturer's website to see if there are any recalls or technical service bulletins related to this specific OBDII code in your vehicle model.

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