Powertrain, generic · Transmission

P0986 Shift Solenoid E Control Circuit High

Check engine lightOn
EmissionsRelevant
Drive cycleNot required
Limp modePossible

High-voltage fault in the control circuit of shift solenoid E. Ford means a short to power on SSE; an open sets P0770 and a ground short P0985. On the 6R140 SSE is a variable force solenoid for the C456 clutch, so a short to power can hold that clutch on. Saab's 2010 9-5 with the Aisin six-speed instead assigns P0986 to shift solenoid valve 1 and sets it when the circuit reads off although it is commanded on, which also catches an open coil: 100 ms, five times, Type A, all solenoids then switched off. GM's published transmission tables do not use the code. Because makers split opens differently, check the maker's table before replacing parts.

Likely causes

Solenoid E control wire shorted to a supply voltage
Open coil or wire where the maker reads it as high (Saab/Aisin)
Bent or corroded terminals at the solenoid E connector
Faulty driver stage in the control module

Symptoms

  • MIL on, transmission in fail-safe gear
  • Tie-up or harsh shift if the controlled clutch stays applied
  • Adaptation frozen, shift quality worsens

Repair estimate

DifficultyHardWorkshop job
Parts and labour€100–1,800
Time1–5 h

Typical range across vehicles; the real cost depends on what the testing finds.

Parts involved

shift solenoid ewiring harnesstcm

Related codes

P0985P0984P097EP0770P0772

References: saabwisonline.com, fordservicecontent.com, newtonnet.co.uk.