DTC P26C5-18: Exhaust Flow Control Valve "A" Control Circuit Low Circuit Current Below Threshold; DTC P26C5-19: Exhaust Flow Control Valve "A" Control Circuit High Circuit Current Above Threshold [09/2024 - ]: Description
WARNING: This page is about a different car, the 2025 Toyota GR Corolla, 2024 Toyota GR Corolla, and 2023 Toyota GR Corolla. However, it is still accessible from the selected car via links, so may be relevant.
The 2-system exhaust system consists of the exhaust tailpipe assembly (exhaust change valve), exhaust pipe gas control actuator sub-assembly (drive motor and opening angle sensor) and ECM. By switching the gas flow circuit, a balance of quietness and tone is achieved and backpressure is reduced during high loads
The ECM drives the drive motor of the exhaust pipe gas control actuator sub-assembly in accordance with the driving conditions to switch the exhaust change valve open or closed.
The opening angle of the exhaust change valve is detected by the opening angle sensor of the exhaust pipe gas control actuator sub-assembly, and feedback is provided to the ECM as an exhaust valve operation status signal.
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area | MIL | Note |
|---|---|---|---|---|---|
| P26C5-18 | Exhaust Flow Control Valve "A" Control Circuit Low Circuit Current Below Threshold | Both of the following conditions are met for 2 seconds or more (1 trip detection logic):
|
|
Does not come on | SAE Code: P26C6 |
| P26C5-19 | Exhaust Flow Control Valve "A" Control Circuit High Circuit Current Above Threshold | Overcurrent cut of the exhaust pipe gas control actuator sub-assembly (drive motor) continues for 2 seconds or more (1 trip detection logic): |
|
Does not come on | SAE Code: P26C7 |