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P1664 Buick Code - Skip Shift 1-4 Upshift Lamp Control Circuit

- Code Popularity: 3,059 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 3/3
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What are the Possible Causes of the DTC P1664 Buick?

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 Up-Shift driver
  • Up-Shift driver harness is open or shorted
  • Up-Shift driver circuit poor electrical connection
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How to Fix the DTC P1664 Buick?

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.

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What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P1664 Buick 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 P1664 Buick Description

With the engine speed over 600 rpm, the Powertrain Control Module (PCM) detects the commanded state of the Up-Shift driver and the Actual state of the control circuit did not match, all conditions met for over 5 seconds.

OBDII Code P1664 Buick - Skip Shift 1-4 Upshift Lamp Control Circuit - AutoCodes.com
P1664 Buick Code - Skip Shift 1-4 Upshift Lamp Control Circuit

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Code P1664 Buick comments

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