P1239 Code AUDI – What Does It Mean?
The diagnostic code P1239 corresponds to an open circuit in cylinder 3 injector. This is a generic description, but some manufacturers may use different terminology depending on the vehicle model and year. Currently, no more specific information is available for Audi models.
Possible Symptoms
- Illumination of the check engine light (or “Service engine soon” message)
- In some cases, a slight loss of power or irregular engine operation may be noticed.
Possible Causes of P1239 Code
- Faulty fuel injector (cylinder 3)
- Injector wiring harness (cylinder 3) open or short-circuited
- Poor electrical connection at the injector 3 circuit
How to Fix P1239 Code on an Audi?
Here are the recommended steps to diagnose and repair this code:
- Visually inspect the wiring harness of cylinder 3 injector:
- Look for cut, pinched, or melted wires.
- Check for a short circuit or break in the circuit.
- Examine the connectors:
- Ensure they are not broken, bent, corroded, or poorly connected.
- Clean the pins if necessary.
- Test the fuel injector:
- Measure the resistance of injector 3 to detect any potential fault.
- Replace it if it is defective.
- Check the connection to the engine control unit (ECU):
- A poor connection or bad ground can generate this code.
If after all these checks the problem persists, it is recommended to use a professional diagnostic tool for a more in-depth test or to consult a qualified Audi technician.