Audi DTC P1377 – Cylinder 8, ignition circuit Short Circuit to B+
DTC P1377 meaning on Audi
DTC P1377 on an Audi indicates a short circuit to B+ in the ignition circuit of cylinder 8. This fault code is specific to the ignition system of the vehicle and points towards an electrical issue in the circuit related to the ignition coil or wiring for cylinder 8.
Audi DTC P1377 symptoms
Symptoms of DTC P1377 on an Audi may include engine misfires, rough idling, loss of power, and potentially an illuminated check engine light on the dashboard. The vehicle may also experience poor fuel efficiency and overall performance issues.
Audi DTC P1377 causes
The common causes of DTC P1377 on an Audi include a faulty ignition coil for cylinder 8, damaged wiring or connectors in the ignition circuit, or a short circuit to B+ in the circuit. Additionally, issues with the Engine Control Module (ECM) or related components could also trigger this fault code.
Audi DTC P1377 seriousness
Ignoring DTC P1377 on an Audi can lead to further damage to the ignition system, potentially causing more severe engine problems over time. It is important to address this issue promptly to prevent any long-term issues and ensure the vehicle operates smoothly.
How to diagnose DTC P1377 on Audi
To diagnose DTC P1377 on an Audi, start by using a diagnostic scanner to retrieve the fault code and perform a visual inspection of the ignition coil, wiring, and connectors for cylinder 8. Check for any visible damage or signs of a short circuit. Use a multimeter to test the continuity and resistance in the circuit to pinpoint the exact location of the short circuit.
How to fix DTC P1377 on Audi
To fix DTC P1377 on an Audi, replace the faulty ignition coil for cylinder 8 if necessary. Repair or replace any damaged wiring or connectors in the ignition circuit. Ensure all connections are secure and free of corrosion. Clear the fault code from the ECM memory after completing the repairs.
How to erase DTC P1377 on Audi
To erase DTC P1377 on an Audi, use a diagnostic scanner to access the ECM and navigate to the fault code menu. Select the option to clear the fault code and reset the ECM. Once the fault code is successfully cleared, start the vehicle and ensure the check engine light is no longer illuminated.
Recommended tools for Audi diagnostics
Explore our expert picks: The Best OBD2 Scanners for 2025
Easy-to-use Multimeter for reliable diagnostics: AstroAI Auto-ranging Multimeter
Some of the links on this page may be affiliate links, which means we may earn a small commission if you make a purchase. This helps us keep our DTC database up to date and provide valuable content for free. We only recommend products that we have tested and believe to be the best in their class.