AutoCodes – Mercury – P1422 Mercury

P1422 Mercury Code - Exhaust Gas Ignition Temperature Sensor

Quick Answer

The Powertrain Control Module (PCM) monitors the Exhaust Gas Ignition Temperature Sensor. Common causes include Faulty Exhaust Gas Ignition Temperature Sensor, Exhaust Gas Ignition Temperature Sensor harness is open or shorted, Exhaust Gas Ignition 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
P1422 Mercury indicates Exhaust Gas Ignition Temperature Sensor.
Common causes
Common causes include Faulty Exhaust Gas Ignition Temperature Sensor, Exhaust Gas Ignition Temperature Sensor harness is open or shorted, Exhaust Gas Ignition 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 1,178
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Sep 24, 2019
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Code P1422 Mercury Description

The Powertrain Control Module (PCM) monitors the Exhaust Gas Ignition Temperature Sensor. The PCM sets the OBDII code when the Exhaust Gas Ignition Temperature Sensor is not to factory specifications.
OBDII Code P1422 Mercury - Exhaust Gas Ignition Temperature Sensor - AutoCodes.com
P1422 Mercury Code - Exhaust Gas Ignition Temperature Sensor

What are the Possible Causes of the DTC P1422 Mercury?

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

How to Fix the DTC P1422 Mercury?

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 P1422 Mercury 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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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 P1422 Mercury Code

What does the OBDII code P1422 indicate?

The OBDII code P1422 refers to a problem with the Exhaust Gas Ignition Temperature Sensor, indicating that the sensor is malfunctioning or reporting improper readings.

What are common symptoms of the P1422 code?

Common symptoms include a check engine light, poor fuel economy, rough engine performance, and increased emissions.

What causes the P1422 code to trigger?

The P1422 code can be triggered by a faulty exhaust gas ignition temperature sensor, wiring issues, or problems with the engine control module (ECM).

How can I diagnose the P1422 code?

To diagnose the P1422 code, start by using an OBDII scanner to confirm the code, then inspect the wiring and connections of the sensor for damage or corrosion, and test the sensor's functionality.

What are some common repair tips for the P1422 code?

Common repair tips include replacing the faulty exhaust gas ignition temperature sensor, repairing any damaged wiring or connectors, and resetting the ECM after repairs to clear the code.

Can driving with the P1422 code cause further damage?

Yes, driving with the P1422 code can lead to reduced engine efficiency and increased emissions, which may worsen the overall condition of the vehicle if not addressed promptly.

Is it safe to drive with the P1422 code?

While it may be safe for short distances, it is not advisable to drive long-term with the P1422 code, as it can lead to more serious engine issues and potential failure.

How much does it typically cost to repair the P1422 code?

Repair costs for the P1422 code can vary widely, but replacing the exhaust gas ignition temperature sensor usually ranges from $100 to $300, depending on labor and parts.

Will clearing the code fix the problem?

Clearing the code will not fix the underlying issue; it is essential to diagnose and repair the root cause of the P1422 code to prevent it from reoccurring.

Discuss the causes and fixes for P1422 Mercury OBDII Code

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