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P1646 Lincoln Code - Linear O2 Sensor Control Chip Bank 1

- Code Popularity: 1,371 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 3/3
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What are the Possible Causes of the DTC P1646 Lincoln?

NOTE: The causes shown may not be a complete list of all potential problems, and it is possible that there may be other causes.
  • Faulty Powertrain Control Module (PCM)
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How to Fix the DTC P1646 Lincoln?

Review the 'Possible Causes' mentioned above and visually examine the corresponding wiring harness and connectors. Ensure to check for any damaged components and inspect the connector pins for signs of being broken, bent, pushed out, or corroded.

Code Tech Notes

Reprogram or update PCM. Check for other DTCs and diagnose those first. Make sure to check for aftermarket performance products before installing a new PCM

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What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P1646 Lincoln code, it typically requires 1.0 hour of labor. The specific diagnosis time and labor rates at auto repair shops can differ based on factors such as the location, make and model of the vehicle, and even the engine type. It is common for most auto repair shops to charge between $75 and $150 per hour.

What are Code Possible Symptoms?

  • Engine Light ON (or Service Engine Soon Warning Light)

Code P1646 Lincoln Description

The Powertrain Control Module (PCM) monitors the application-specific integrated circuit that controls and monitors the Heated Oxygen Sensor (HO2S). The test fails when the PCM detects an internal circuit or communication concern.

OBDII Code P1646 Lincoln - Linear O2 Sensor Control Chip Bank 1 - AutoCodes.com
P1646 Lincoln Code - Linear O2 Sensor Control Chip Bank 1

Need More Information on the Code?

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Code P1646 Lincoln comments

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