AutoCodes – Nissan – P102B Nissan

P102B Nissan Code - Exhaust Temperature Sensor

Quick Answer

The Engine Control Module (ECM) monitors the Exhaust Temperature Sensor. Common causes include Faulty Exhaust Temperature Sensor, Exhaust Temperature Sensor harness is open or shorted, Exhaust Temperature 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: P102B Nissan indicates Exhaust Temperature Sensor.
Common causes: Common causes include Faulty Exhaust Temperature Sensor, Exhaust Temperature Sensor harness is open or shorted, Exhaust Temperature 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 37,437

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 Jul 17, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P102B Nissan Description

The Engine Control Module (ECM) monitors the Exhaust Temperature Sensor. The ECM sets the OBDII code when the Exhaust Temperature Sensor is not to factory specifications.

OBDII Code P102B Nissan - Exhaust Temperature Sensor - AutoCodes.com — P102B Nissan Code - Exhaust Temperature Sensor

What does this mean?

What are the Possible Causes of the DTC P102B Nissan?

Faulty Exhaust Temperature Sensor
Exhaust Temperature Sensor harness is open or shorted
Exhaust Temperature Sensor circuit poor electrical connection

How to Fix the DTC P102B Nissan?

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 P102B Nissan 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 P102B Nissan code?

Need more information on how to fix the P102B Nissan 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 P102B Nissan Code

1. What are the common symptoms of OBDII code P102B in a Nissan related to the Exhaust Temperature Sensor?

- Common symptoms include poor engine performance, decreased fuel efficiency, and the illumination of the check engine light.

2. What are the possible causes of OBDII code P102B in a Nissan indicating an issue with the Exhaust Temperature Sensor?

- The code may be triggered by a faulty exhaust temperature sensor, wiring issues, or problems with the sensor's circuit.

3. How can I diagnose the root cause of OBDII code P102B in my Nissan related to the Exhaust Temperature Sensor?

- To diagnose the issue, it is recommended to perform a thorough inspection of the exhaust temperature sensor, check for any damaged wiring, and use an OBDII scanner for further diagnostics.

4. Can I continue driving my Nissan with OBDII code P102B related to the Exhaust Temperature Sensor illuminated?

- It is not recommended to continue driving the vehicle with the code active, as it may lead to further damage and potentially affect the engine's performance.

5. Are there any temporary fixes or workarounds for OBDII code P102B in a Nissan indicating a problem with the Exhaust Temperature Sensor?

- Temporary fixes are not recommended, as addressing the root cause of the issue is essential to ensure the proper functioning of the exhaust temperature sensor.

6. How much does it typically cost to repair OBDII code P102B in a Nissan due to an issue with the Exhaust Temperature Sensor?

- Repair costs can vary depending on the exact cause of the problem, but they may range from $100 to $300 for sensor replacement and associated repairs.

7. Can I replace the Exhaust Temperature Sensor in my Nissan myself to fix OBDII code P102B?

- While it is possible to replace the sensor yourself, it is recommended to have the job done by a professional mechanic to ensure proper installation and calibration.

8. Will resetting the OBDII code P102B related to the Exhaust Temperature Sensor in my Nissan make it go away permanently?

- Resetting the code without addressing the underlying issue will only temporarily clear the check engine light, and the code is likely to reappear until the problem is fixed.

9. Is it safe to ignore OBDII code P102B in a Nissan if the vehicle seems to be running fine?

- Ignoring the code may lead to decreased fuel efficiency, potential engine damage, and could cause the vehicle to fail an emissions test, so it is not advisable to ignore it.

10. How often should I have the Exhaust Temperature Sensor in my Nissan checked to prevent OBDII code P102B from recurring?

- It is recommended to have the sensor and related components inspected during routine maintenance or whenever you notice any symptoms associated with OBDII code P102B to prevent its recurrence.