AutoCodes – Generic – P14A2

P14A2 Code - Signal Of Exhaust Gas Back Pressure Sensor Dynamically Implausible

Quick Answer

The Engine Control Module (ECM) monitors the Exhaust Gas Back Pressure Sensor. Common causes include Faulty Exhaust Gas Back Pressure Sensor, Exhaust Gas Back Pressure Sensor harness is open or shorted, Exhaust Gas Back 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: P14A2 indicates Signal Of Exhaust Gas Back Pressure Sensor Dynamically Implausible.
Common causes: Common causes include Faulty Exhaust Gas Back Pressure Sensor, Exhaust Gas Back Pressure Sensor harness is open or shorted, Exhaust Gas Back 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 10,325

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 Oct 01, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P14A2 Description

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

OBDII Code P14A2 - Signal Of Exhaust Gas Back Pressure Sensor Dynamically Implausible - AutoCodes.com — P14A2 Code - Signal Of Exhaust Gas Back Pressure Sensor Dynamically Implausible

What does this mean?

What are the Possible Causes of the DTC P14A2?

Faulty Exhaust Gas Back Pressure Sensor
Exhaust Gas Back Pressure Sensor harness is open or shorted
Exhaust Gas Back Pressure Sensor circuit poor electrical connection

How to Fix the DTC P14A2?

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 P14A2 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 P14A2 code?

Need more information on how to fix the P14A2 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P14A2 code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

P14A2 BMW — Signal Of Exhaust Gas Back Pressure Sensor Dynamically Implausible
P14A2 MINI — Signal Of Exhaust Gas Back Pressure Sensor Dynamically Implausible

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 P14A2 Code

1. What does OBDII code P14A2 mean?

P14A2 indicates that the signal from the exhaust gas back pressure sensor is deemed dynamically implausible, meaning the sensor's readings are inconsistent with expected values.

2. What are the common symptoms of code P14A2?

Symptoms may include reduced engine power, poor fuel efficiency, excessive exhaust smoke, or the check engine light turning on.

3. What causes the P14A2 code?

Common causes include a faulty exhaust gas back pressure sensor, wiring or connection issues, exhaust leaks, or an issue with the engine control module (ECM).

4. Can I drive with the P14A2 code active?

Driving with this code is not recommended, as it can lead to reduced engine performance and potentially cause further damage to the exhaust or engine systems.

5. How is the P14A2 code diagnosed?

A technician will use a scan tool to confirm the code, inspect the exhaust gas back pressure sensor and its wiring, and may perform a pressure test to verify sensor functionality.

6. How do I fix the P14A2 code?

Repairs may involve replacing the exhaust gas back pressure sensor, repairing or replacing damaged wiring, or addressing exhaust leaks.

7. How much does it cost to fix the P14A2 code?

Repair costs can range from $100 to $300 depending on whether the sensor needs replacement or if additional repairs, like fixing wiring or leaks, are required.

8. Can a dirty exhaust system cause the P14A2 code?

Yes, a clogged exhaust system, such as a blocked catalytic converter or particulate filter, can lead to implausible sensor readings.

9. Will clearing the P14A2 code with a scan tool fix the issue?

Clearing the code may temporarily turn off the check engine light, but the underlying issue must be resolved to prevent the code from returning.

10. What maintenance can prevent the P14A2 code?

Regular inspection of the exhaust system, keeping the sensor and connections clean, and addressing exhaust leaks promptly can help prevent this issue.