AutoCodes – Lincoln – P164B Lincoln

P164B Lincoln Code - O2 Sensor Positive Current Trim Circuit Performance Bank 2 Sensor 1

Quick Answer

A resistor is installed in the universal Heated Oxygen Sensor (HO2S) connector for part to part variance. Common causes include Faulty Universal HO2S, Universal HO2S harness is open or shorted, Universal HO2S 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
P164B Lincoln indicates O2 Sensor Positive Current Trim Circuit Performance Bank 2 Sensor 1.
Common causes
Common causes include Faulty Universal HO2S, Universal HO2S harness is open or shorted, Universal HO2S 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 1,571
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Jan 19, 2019
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Code P164B Lincoln Description

A resistor is installed in the universal Heated Oxygen Sensor (HO2S) connector for part to part variance. The Powertrain Control Module (PCM) determines the value of this resistor by taking multiple measurements of the resistor during each ignition ON event. The PCM uses this value in order to compensate for the variance in the pumping current signal. The test fails if the PCM receives an inconsistent or erratic measurement of the resistor.
OBDII Code P164B Lincoln - O2 Sensor Positive Current Trim Circuit Performance Bank 2 Sensor 1 - AutoCodes.com
P164B Lincoln Code - O2 Sensor Positive Current Trim Circuit Performance Bank 2 Sensor 1

What are the Possible Causes of the DTC P164B Lincoln?

  • Faulty Universal HO2S
  • Universal HO2S harness is open or shorted
  • Universal HO2S circuit poor electrical connection

How to Fix the DTC P164B Lincoln?

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 P164B Lincoln 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 P164B Lincoln Code

What does the OBDII code P164B mean on a Lincoln?

P164B indicates an issue with the O2 Sensor Positive Current Trim Circuit Performance for Bank 2, Sensor 1. It means the oxygen sensor isn't performing as expected within the current trim parameters.

What are the common symptoms of code P164B on a Lincoln?

Symptoms may include the Check Engine Light turning on, poor fuel efficiency, rough idling, reduced engine performance, and possibly increased exhaust emissions.

What causes the P164B code on a Lincoln?

Common causes include a faulty oxygen sensor, damaged wiring or connectors in the O2 sensor circuit, a malfunctioning PCM (Powertrain Control Module), or exhaust leaks near the sensor.

How do I diagnose the P164B code?

Start with a visual inspection of the O2 sensor wiring and connectors for damage. Use a diagnostic scan tool to monitor live data from the O2 sensor and test the circuit for proper voltage and current.

Can I drive my Lincoln with the P164B code?

While the vehicle may still be drivable, it's not advised to ignore the issue. Driving with this code can lead to increased fuel consumption, higher emissions, and potential damage to other engine components.

How do I fix the P164B code on a Lincoln?

Repairs may include replacing the faulty O2 sensor, repairing or replacing damaged wiring or connectors, addressing any exhaust leaks, or reprogramming or replacing the PCM if necessary.

How much does it cost to repair the P164B code?

The repair cost depends on the root cause. Replacing an O2 sensor can range from $150 to $400, while wiring repairs or PCM replacement may cost more depending on labor and parts.

Can a dirty air filter cause the P164B code?

A dirty air filter typically does not cause this specific code, but it can contribute to poor engine performance. It's still a good idea to check and replace the air filter if needed.

Is the P164B code specific to Lincoln vehicles?

While the P164B code may appear on other vehicle makes, its exact definition and troubleshooting steps are specific to Lincoln or Ford vehicles.

Can a bad catalytic converter trigger the P164B code?

A failing catalytic converter is not a direct cause of the P164B code but can affect exhaust flow, impacting O2 sensor performance and potentially contributing to the issue.

Discuss the causes and fixes for P164B Lincoln OBDII Code

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