Powertrain, generic · Transmission

P0967 Pressure Control Solenoid B Control Circuit High

Check engine lightOn
EmissionsRelevant
Drive cycleNot required
Limp modePossible

Pressure control solenoid B circuit high: a short to voltage, and on GM six-speeds also an open, since they have no P0964. For the Saab 9-4X 6T70, where B is clutch pressure solenoid 2 for the 3-5-reverse clutch, the module needs 1 s, stores a Type A code and limits the transmission to reverse and 3rd gear at maximum line pressure; GM's 2018 six-speed table uses 0.3 s and one trip. GM's 8-speed (clutch 2), the 9- and 10-speeds, Allison 1000 (power short within 75 ms) and GM's dual-clutch gearbox (even-clutch valve) report the same fault on their solenoid B. Ford does not use it. Siblings: P0964 open, P0966 low, P0965 performance. Repairs usually involve the solenoid body or valve body module.

Likely causes

Open coil or poor connection (reported as high on GM six-speeds)
Control wire shorted to a supply voltage
Damaged or contaminated transmission connector
Faulty output stage in the control module

Symptoms

  • MIL on, limp mode in a fixed gear
  • Harsh engagements at maximum line pressure
  • Dual-clutch gearbox loses the even gears

Repair estimate

DifficultyHardWorkshop job
Parts and labour€150–1,800
Time1–5 h

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

Parts involved

pressure control solenoid bwiring harnesstcm

Related codes

P0964P0965P0966P0963P0971P0778

References: saabwisonline.com, gsi.ext.gm.com, gsi.ext.gm.com.