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Home >> Toyota >> 2016 >> Highlander Hybrid Limited >> Repair and Diagnosis >> External Pages >> Different car >> Section 78 (Hybrid Control System (2GR-FXS) - Diagnostic Codes (6 Of 6)) >> Hybrid Control System >> DTC P0A38-257: Generator Temperature Sensor Circuit Low; DTC P0A39-259: Generator Temperature Sensor Circuit High [11/2016 - 10/2017] >> Description

DTC P0A38-257: Generator Temperature Sensor Circuit Low; DTC P0A39-259: Generator Temperature Sensor Circuit High [11/2016 - 10/2017]: Description

WARNING: This page is about a different car, the 2019 Toyota Highlander, 2018 Toyota Highlander, and 2017 Toyota Highlander. However, it is still accessible from the selected car via links, so may be relevant.

Refer to the description for DTC P0A37-260.

Refer to DESCRIPTION

DTC No. Detection Item DTC Detection Condition Trouble Area MIL Warning Indicate
P0A38-257 Generator Temperature Sensor Circuit Low Short to ground in the generator temperature sensor circuit
(1 trip detection logic)
  • Wire harness or connector
  • Hybrid vehicle control ECU assembly
  • Generator temperature sensor (Hybrid vehicle transaxle assembly)
Does not come on Master Warning Light:
Comes on
P0A39-259 Generator Temperature Sensor Circuit High Open or short to +B in the generator temperature sensor circuit
(1 trip detection logic)
  • Wire harness or connector
  • Hybrid vehicle control ECU assembly
  • Generator temperature sensor (Hybrid vehicle transaxle assembly)
Does not come on Master Warning Light:
Comes on
RELATED DATA LIST

DTC No. Data List
P0A38-257 Motor Temp No2
P0A39-259

HINT: 

After confirming that DTC P0A38-257 or P0A39-259 is output, use the Techstream to check "Motor Temp No2" in the Data List.

Displayed Temperature Malfunction
-40°C (-40°F) Open circuit or short to +B
215°C (419°F) Short circuit or short to ground