P1705 Buick Not in P or N During KOEO / KOER

P1706 Buick Park and Neutral Position Switch

Possible causes
– Misadjusted Park/Neutral Switch
– Faulty Park/Neutral Switch
– Park/Neutral Switch harness is open or shorted
– Park/Neutral Switch circuit poor electrical connection
Tech description
For models with “Manual Transmission” the P1706 Buick is for the Neutral Position Switch.
What about the obd code?
The signal of the park/neutral position (PNP) switch is not changed in the process of engine starting and driving.
Symptoms
– Engine Light ON (or Service Engine Soon Warning Light)
P1706 Buick Description

When the shift position is P or N, park/neutral position (PNP) switch is turned ON. The Engine Control Module (ECM) detects the position because the continuity of the line (the ON signal) exists.

The park/neutral position (PNP) switch assembly also indicates a transmission range switch to detect shift lever position.

Buick Vehicle:Buick Regal – ?Buick Riviera – ?Buick LaCrosse – ?David Dunbar Buick – Buick Century – Buick LaCrosse – Buick LeSabre – Buick Lucerne – Buick Park Avenue – Buick Regal – Buick Verano – Buick Enclave – Buick Encore – Buick Rainier – Buick Rendezvous – Buick Terraza – Buick Riviera