P0A26 Generic (SAE) Basic entry

Generator Torque Sensor Circuit Intermittent

Updated 2026-10-02 · Hybrid propulsion

Severity

Medium

Typical repair cost

40 – 350 EUR

System

Powertrain

What it means

P0A26 is stored when the Generator Torque signal drops out or jumps erratically for short periods. Intermittent faults are almost always connector, wiring or vibration related.

This entry is compiled automatically from the standard definition and typical diagnostic practice for this type of fault. A detailed, reviewed article is in preparation.

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Symptoms

Hybrid system warning light
Reduced electric assistance or no EV mode
Vehicle may refuse to start (ready mode)
Higher fuel consumption

Common causes

Damaged, chafed or corroded wiring in the Generator Torque circuit
Corroded, loose or water-damaged connector terminals
Failed Generator Torque component (sensor, solenoid or actuator)
Poor ground connection for the module or component
Faulty control module driver (rare, confirm all else first)

How to diagnose

Read freeze frame data and note when the code set (cold start, under load, after rain)
Inspect the Generator Torque connector for bent pins, corrosion and water; wiggle the harness with the engine running and watch live data
Measure supply voltage and ground at the connector with the key on
Check the signal wire for shorts to ground or battery and for continuity to the control module
Test or substitute the Generator Torque only after wiring and connectors are confirmed good
Clear the code and complete a drive cycle to confirm the repair

Frequently asked questions

Can I keep driving with P0A26?

Usually yes for a short time, but expect reduced performance or higher fuel use. Have it diagnosed within a few days.

Will clearing P0A26 fix it?

No. Clearing only erases the stored code; it returns as soon as the monitor runs again unless the cause is repaired.

Related codes

P0A23 P0A24 P0A25