OBD-II Code P0981 — What It Means & How to Fix It

What Does This Error Mean?

P0981 means Shift Solenoid E Control Circuit Range/Performance has a fault. This code means the TCM is commanding solenoid E but it is not responding within expected performance parameters. The solenoid may be partially clogged, mechanically worn, or have a high-resistance electrical issue. Affected gear combinations controlled by solenoid E may shift poorly, too firmly, or not at all.

Affected Models

Vehicles with 5-speed or 6-speed automatic transmissions using an E-labeled solenoid
Common in Honda and Acura 5-speed automatic transmissions
Common in Toyota and Lexus vehicles with A750 and U660E transmissions
Common in GM 6-speed rear-wheel-drive transmissions

Common Causes

Partially clogged solenoid E orifice from degraded or contaminated transmission fluid
High resistance in the solenoid E wiring from corrosion or a bad connection
Worn solenoid E plunger or spring not responding proportionally to TCM commands
Low transmission fluid reducing available hydraulic pressure to solenoid E
Valve body wear at the solenoid E bore causing unpredictable pressure output

How to Fix It

Check and service the transmission fluid first. Degraded fluid is the primary cause of solenoid range/performance failures.

On Honda and Acura vehicles, use only genuine Honda ATF or a certified equivalent. Other fluids cause shift quality issues.
Measure solenoid E resistance at the external transmission connector. High resistance (above spec) indicates a worn solenoid or corroded connection.

Typical spec is 10 to 30 ohms. Readings above 50 ohms suggest excessive resistance in the circuit.
Use a scan tool to compare commanded solenoid E duty cycle with actual shift behavior. A solenoid that does not respond proportionally to commands indicates a performance fault.

On Toyota vehicles, Techstream software provides the best solenoid-level data for this diagnosis.
Replace solenoid E if resistance is high, it does not click under 12V activation, or live data shows it is not responding to commands.

On Honda 5-speed transmissions, the solenoid pack can be replaced as a unit for thorough repair.
After replacement, clear codes, refill with correct ATF, and test drive through all gear ranges at different speeds and loads.

Confirm upshifts and downshifts feel smooth and that no harsh engagements or slipping remains.

When to Call a Professional

Solenoid replacement with fluid service costs $250 to $600. Valve body service or replacement runs $500 to $1,200. TCM recalibration or replacement is $400 to $800. This is a moderate repair — proper diagnosis prevents unnecessary part replacements.

Frequently Asked Questions

Is P0981 serious?

Moderate — it means solenoid E is not working properly, which affects specific gear changes. Left unaddressed, improper solenoid operation leads to clutch pack wear. Fix it when convenient, but do not delay too long.

Can I just clean solenoid E instead of replacing it?

Sometimes cleaning a solenoid in ATF solvent resolves a clog. However, a worn plunger or spring cannot be repaired by cleaning. If the solenoid fails the resistance and activation test after cleaning, replacement is necessary.

Why does this happen more on Honda vehicles?

Honda's 5-speed automatic transmissions are known to be sensitive to ATF quality and service intervals. When fluid is not changed every 30,000 to 60,000 miles, varnish deposits build up and cause solenoid range/performance codes. Regular fluid maintenance prevents most solenoid issues on these transmissions.