P08C0: Pressure Control Solenoid L Control Circuit Range/Performance

Set when the control circuit of pressure control solenoid L is electrically intact but its behaviour is implausible, for example the current through the coil does not match the commanded value. No manufacturer documents this code publicly; Toyota, the only documented user of letter L, publishes only P08BA71. As an orientation, GM's tables for the comparable solenoid M list a current check next to the circuit tests: a deviation of more than 70 % for 60 ms or more than 400 mA for 300 ms between target and estimated current, without naming P08C9 for it. Causes are a coil with changed resistance, contact resistance or supply problems. P08BF, P08C1 and P08C2 cover clear open or short faults.

Symptoms

• Check engine light on
• Uneven shift quality

Most likely causes

• Coil resistance out of specification
• High contact resistance at connector pins
• Unstable supply voltage to the transmission module

What to check, in order

Start with the simplest. You can tick off each step.

1. Check the fluid level and condition according to the manufacturer
2. Compare the reading with other engine data while varying the engine speed.
3. Check the transmission connector
4. Read the data with a transmission-compatible scanner
5. Measure the solenoid valve circuit
6. Leave opening the transmission to a specialized repair shop

Good to know

• Repair difficulty: hard
• It can trigger limp mode.
• It affects emissions.

What each character of P08C0 means

• P: Powertrain: engine and transmission
• 0: Generic code: same on every make
• 8: Transmission
• C0: Specific fault in that system

Frequently asked questions

Can I keep driving with code P08C0?

Drive as little as possible and gently. If the transmission slips or stays in one gear, go slowly to a repair shop or call for a tow truck.

What causes code P08C0?

The most common causes are: coil resistance out of specification; high contact resistance at connector pins; unstable supply voltage to the transmission module.

Related codes

• P08BFPressure Control Solenoid L Control Circuit/Open
• P08C1Pressure Control Solenoid L Control Circuit Low
• P08C2Pressure Control Solenoid L Control Circuit High
• P08C9Pressure Control Solenoid M Control Circuit Range/Performance

Sources

• law.cornell.edu: 13 CCR 1968.2
• gsi.ext.gm.com: 25OBDG07A Part 1

Values and procedures vary by manufacturer. If it affects brakes, steering, fuel or high voltage, see a professional. Updated: 2026-11-04. How we build these pages.