U0609

Lost Communication With Manifold Absolute Pressure/Barometric Pressure Sensor

Severity

⚠️ Medium

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$17–56 (est.)

Symptoms

Check Engine light comes on
Reduced engine power
Increased fuel consumption
Unstable engine idling
The car goes into emergency mode

Causes

Open or short circuit in the sensor circuit
MAP/BARO sensor malfunction
Connector problems or contact corrosion
CAN bus fault
ECU software error

How to Fix

Check the integrity of the wiring harness to the sensor
Check the power supply and ground of the sensor
Check resistance and sensor signal
Clean connector contacts
If necessary, replace the MAP/BARO sensor

Related codes

U0100 U0121 U0073