Powertrain, generic · Transmission

P08BD Pressure Control Solenoid L Electrical

Check engine lightOn
EmissionsRelevant
Drive cycleNot required
Limp modePossible

Collective code for an electrical fault of pressure control solenoid L that the module does not break down further into open, low or high. No manufacturer documents it publicly; Toyota, the one known user of letter L, has only published the stuck fault P08BA71. Manufacturers that diagnose their solenoids in detail use the specific circuit codes instead, as GM does for solenoid M with P08C8, P08CA and P08CB, each fed by the diagnostic status of the output driver chip. CARB requires a circuit continuity check for every monitored transmission solenoid. The usual culprits are coil, connector or the internal harness; the driver sees the warning light and, depending on the valve, a restricted gear range.

Likely causes

Solenoid coil open or shorted
Corroded connector or damaged internal harness
Faulty output stage in the transmission control module

Symptoms

  • Check engine light on
  • Restricted gears or fallback gear

Repair estimate

DifficultyHardWorkshop job
Parts and labour€100–1,500
Time0.5–4 h

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

Parts involved

pressure control solenoid ltcmtransmission wiring

Related codes

P08BAP08BEP08BFP08C1P08C2P08C6

References: law.cornell.edu, gsi.ext.gm.com.