AutoCodesLincoln – P00D2 Lincoln

P00D2 Lincoln Code - HO2S Heater Control Circuit Range/Performance Bank 1 Sensor 2

Quick Answer

The HO2S detects the presence of oxygen in the exhaust and produces a variable voltage according to the amount of oxygen detected. Common causes include Faulty Heated Oxygen Sensor Bank 1 Sensor 2 (HO2S12), Heated Oxygen Sensor Bank 1 Sensor 2 circuit open shorted to ground, Heated Oxygen Sensor Bank 1 Sensor 2 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
P00D2 Lincoln indicates HO2S Heater Control Circuit Range/Performance Bank 1 Sensor 2.
Common causes
Common causes include Faulty Heated Oxygen Sensor Bank 1 Sensor 2 (HO2S12), Heated Oxygen Sensor Bank 1 Sensor 2 circuit open shorted to ground, Heated Oxygen Sensor Bank 1 Sensor 2 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 211
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Sep 20, 2023
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Code P00D2 Lincoln Description

The HO2S detects the presence of oxygen in the exhaust and produces a variable voltage according to the amount of oxygen detected. A high concentration of oxygen (lean air to fuel ratio) in the exhaust produces a voltage signal of less than 0.4 volt. A low concentration of oxygen (rich air to fuel ratio) produces a voltage signal greater than 0.6 volt. The HO2S provides feedback to the Powertrain Control Module (PCM) indicating air to fuel ratio in order to achieve a near stoichiometric air to fuel ratio of 14.7 to 1 (9 to 1 E100) during closed loop engine operation.
When the oxygen sensor is cold, disconnected, or on initial start-up, the voltage may read between 1.5 to 1.7 volts. The oxygen sensor voltage will decrease to the normal operating range of 0.0 to 1.1 volts during warm, stabilized engine running conditions.
The HO2S heater is embedded with a sensing element. The heating element heats the sensor to a temperature of 800°C (1,472°F). At approximately 300°C (572°F) the engine enters closed loop operation. The heater allows the engine to enter closed loop operation sooner.
The PCM controls the Heated Oxygen Sensor Bank 1, Sensor 2 (HO2S12) heater ON and OFF duty cycle to maintain a calibrated temperature. This Diagnostic Trouble Code (DTC) is set when the internal impedance of the heated oxygen sensor Bank 1 Sensor 2 (HO2S12) exceeds the calibrated threshold.
OBDII Code P00D2 Lincoln - HO2S Heater Control Circuit Range/Performance Bank 1 Sensor 2 - AutoCodes.com
P00D2 Lincoln Code - HO2S Heater Control Circuit Range/Performance Bank 1 Sensor 2

What are the Possible Causes of the DTC P00D2 Lincoln?

  • Faulty Heated Oxygen Sensor Bank 1 Sensor 2 (HO2S12)
  • Heated Oxygen Sensor Bank 1 Sensor 2 circuit open shorted to ground
  • Heated Oxygen Sensor Bank 1 Sensor 2 circuit poor electrical connection

How to Fix the DTC P00D2 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 P00D2 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.

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