DTC P0688-1F: ECM/PCM Power Relay Sense Circuit Intermittent [09/2023 - ]: Description
WARNING: This page is about a different car, the 2024 Lexus TX 500h. However, it is still accessible from the selected car via links, so may be relevant.
This DTC indicates that the hybrid vehicle control ECU assembly detected an instantaneous interruption in +B power source voltage.
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area | MIL | Warning Indicate | DTC Output from | Priority | Note |
|---|---|---|---|---|---|---|---|---|
| P0688-1F | ECM/PCM Power Relay Sense Circuit Intermittent | When the ignition switch is ON (READY), the hybrid vehicle control ECU assembly is reset due to an instantaneous interruption of power source. (1 trip detection logic) |
|
Comes on | Master Warning: Comes on |
Hybrid Control | A | SAE Code: P2511 |