P2CA9

DC/DC Converter Temperature Sensor F Circuit

Severity

⚠️ Medium

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$17–56 (est.)

Symptoms

Check Engine light comes on
Reduced vehicle power
The car goes into emergency mode
Incorrect operation of the hybrid system
Increased fuel consumption (for hybrids)

Causes

DC/DC converter temperature sensor malfunction
Open or short circuit in the sensor circuit
Poor contact in the sensor connector
Wiring harness damage
Malfunction of the DC/DC converter itself

How to Fix

Check the integrity of the wiring to the sensor
Check sensor connections and connectors
Test the temperature sensor with a multimeter
Replace temperature sensor if necessary
Check the operation of the DC/DC converter

Related codes

P2CA8 P2CAA P2CAB