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Home >> Toyota >> 2022 >> RAV4 LE, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 15 (Hybrid Control System (2WD, W/ Nickel Metal Hydride Battery) - Diagnostic Codes (1 Of 6)) >> HYBRID CONTROL SYSTEM (for 2WD with NICKEL METAL HYDRIDE BATTERY) >> DTC P0688-1F: ECM/PCM Power Relay Sense Circuit Intermittent [11/2018 - 08/2020] >> Description

DTC P0688-1F: ECM/PCM Power Relay Sense Circuit Intermittent [11/2018 - 08/2020]: Description

WARNING: This page is about a different car, the 2020 Toyota RAV4 and 2019 Toyota RAV4. 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
P0688-1F ECM/PCM Power Relay Sense Circuit Intermittent When the power switch is on (READY), the hybrid vehicle control ECU assembly is reset due to an instantaneous interruption of power source.
(1 trip detection logic)
  • Wire harness or connector
  • Hybrid vehicle control ECU assembly
 Does not come on Master Warning:
Comes on
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