P1419
Secondary Air System Air Mass Flow Sensor Disconnected or Stuck Signal
Severity
⚠️ MediumCan you drive?
Yes, but get it checked soon
Approx. repair cost
$17–56 (est.)
Symptoms
- Check Engine light comes on
- Increase in harmful emissions
- Reduced engine efficiency during cold start
- Possible misfires
- Unstable engine operation at idle
Causes
- Secondary air system air flow sensor malfunction
- Open or short circuit in the sensor circuit
- Poor contact in the sensor connector
- Engine control unit malfunction
- Mechanical damage to the secondary air system
How to Fix
- Check the integrity of the wiring to the sensor
- Check connections and contacts in the sensor connector
- Check the functionality of the air flow sensor
- Replace sensor if necessary
- Check the operation of the secondary air system