P0E51

DC/DC Converter Current Sensor A Circuit

Severity

🔴 High

Can you drive?

Do not drive — repair immediately

Approx. repair cost

$56–167 (est.)

Symptoms

Check Engine Light Is On
Hybrid system power reduction
Problems charging a 12-volt battery
The car goes into emergency mode
Errors in the operation of the hybrid system

Causes

DC/DC converter current sensor malfunction
Open or short circuit in the sensor circuit
Poor contact in sensor connectors
Problems with the hybrid system control unit
Mechanical damage to wiring

How to Fix

Check the continuity of the current sensor circuit
Inspect connectors and contacts for corrosion or damage
Check the functionality of the current sensor
Scan the hybrid system control module for other errors
If necessary, replace the current sensor of the DC/DC converter

Related codes

P0E52 P0E53 P0AFA