AutoCodesLincoln – P2629 Lincoln

P2629 Lincoln Code - Oxygen Sensor Positive Current Trim Circuit/Open 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 Heated Oxygen Sensor (HO2S), Heated Oxygen Sensor (HO2S) harness is open or shorted, Heated Oxygen Sensor (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
P2629 Lincoln indicates Oxygen Sensor Positive Current Trim Circuit/Open Bank 2 Sensor 1.
Common causes
Common causes include Faulty Heated Oxygen Sensor (HO2S), Heated Oxygen Sensor (HO2S) harness is open or shorted, Heated Oxygen Sensor (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.
AI answers can be wrong. Verify repairs with testing. Open full chat
Code Popularity 1,734
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Jan 22, 2019
💬 Need more help? Ask Coddy for instant answers — it's free!

Code P2629 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 determines the resistance value is too high.
OBDII Code P2629 Lincoln - Oxygen Sensor Positive Current Trim Circuit/Open Bank 2 Sensor 1 - AutoCodes.com
P2629 Lincoln Code - Oxygen Sensor Positive Current Trim Circuit/Open Bank 2 Sensor 1

What are the Possible Causes of the DTC P2629 Lincoln?

  • Faulty Heated Oxygen Sensor (HO2S)
  • Heated Oxygen Sensor (HO2S) harness is open or shorted
  • Heated Oxygen Sensor (HO2S) circuit poor electrical connection

How to Fix the DTC P2629 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 P2629 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.

Need more information about the P2629 Lincoln code?

Need more information on how to fix the P2629 Lincoln code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P2629 Lincoln code diagnosed by a professional: Find a repair shop in your area

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 P2629 Lincoln Code

What does the OBDII code P2629 mean on a Lincoln vehicle?

The code P2629 indicates an issue with the Oxygen Sensor Positive Current Trim Circuit/Open for Bank 2 Sensor 1, meaning the sensor is not operating correctly or there is an open circuit.

What are the symptoms of a P2629 code in a Lincoln?

Common symptoms include poor fuel economy, rough idling, engine hesitation, an illuminated check engine light, and difficulty passing emissions tests.

What causes the P2629 code to be triggered?

The most common causes are a faulty oxygen sensor, damaged wiring or connectors in the circuit, an open or shorted circuit, or a malfunctioning powertrain control module (PCM).

How can I diagnose the P2629 code on a Lincoln?

Start by inspecting the wiring and connectors for damage or corrosion, test the oxygen sensor for proper operation, and use a scan tool to monitor live sensor data.

Can I drive my Lincoln with the P2629 code active?

It’s not recommended to drive for extended periods with this code, as it can lead to poor engine performance, increased emissions, and potential damage to other components.

How do I fix the P2629 code on a Lincoln?

Repairs may include replacing the faulty oxygen sensor, repairing damaged wiring or connectors, and, in rare cases, replacing the PCM if it's at fault.

What tools are needed to fix the P2629 code?

You’ll need a scan tool or OBDII code reader, a multimeter to test electrical connections, and basic hand tools for replacing components.

How much does it cost to repair a P2629 code?

Repair costs vary but typically range from $150 to $400, depending on whether the oxygen sensor needs replacement or additional wiring repairs are required.

Is the P2629 code specific to Lincoln vehicles?

No, the P2629 code is a generic OBDII code that can appear on any vehicle with similar issues, but its diagnosis and repair may vary depending on the make and model.

What preventive maintenance can help avoid the P2629 code?

Regularly inspect and maintain the oxygen sensor and wiring, use quality fuel, and address check engine light warnings promptly to prevent circuit-related issues.

Discuss the causes and fixes for P2629 Lincoln OBDII Code

Code P2629 Lincoln comments

No comments found for this page.

AutoCodes App

Fix Your Car Smarter

Try the New AutoCodes App!

Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.

AutoCodes App on Google Play