U043E
Invalid Data Received From Vacuum Sensor A
U043E is an OBD-II diagnostic trouble code meaning: Invalid Data Received From Vacuum Sensor A. Common causes: vacuum sensor a fault, open or short circuit in the sensor circuit. Estimated repair cost: $17–56.
Symptoms
- Unstable engine idling
- Reduced engine power
- Increased fuel consumption
- Check Engine Light Is On
- Problems with the emission control system
Causes
- Vacuum sensor A fault
- Open or short circuit in the sensor circuit
- Poor contact in the sensor connector
- Problems with the engine control unit
- Mechanical damage to vacuum tubes
How to Fix
- Check the integrity of the vacuum tubes
- Check connections and condition of sensor connector
- Check the sensor circuit for open circuit and short circuit
- Replace vacuum sensor A if necessary
- Check and, if necessary, update ECU software
Related codes
Error U043E by Vehicle Brand
FAQ
What does the U043E code mean?
U043E is an OBD-II diagnostic trouble code that indicates: Invalid Data Received From Vacuum Sensor A
What causes a U043E error code?
The most common causes of U043E include: Vacuum sensor A fault; Open or short circuit in the sensor circuit; Poor contact in the sensor connector; Problems with the engine control unit.
How do I fix a U043E diagnostic trouble code?
To fix U043E: Check the integrity of the vacuum tubes. Check connections and condition of sensor connector. Check the sensor circuit for open circuit and short circuit. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with U043E?
Yes, but get it checked soon
How much does it cost to fix U043E?
The estimated repair cost for U043E is $17–56. Actual cost depends on your vehicle, location, and labor rates.
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