P1664 OBD Trouble Code
1 result found
| Type | Powertrain - Manufacturer Controlled DTC - Manufacturer Controlled |
|---|---|
| Description | Skip Shift 1-4 Upshift Lamp Control Circuit |
| Cause | Engine speed over 600 rpm, then the PCM detected 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. |
Try also: https://www.obd-codes.com/p1664
