If the Check Engine light of your Subaru is on and the scanner shows the P0377 code, it means the ECU has detected the following problem:
"Timing Reference High Resolution Signal B Too Many Pulses"
Keep in mind that the severity and repairs for this code depend entirely on the specifications of your Subaru, whether diesel, petrol, or hybrid.
Instead of changing parts blindly, use the CarWatch AI assistant. Scan your Subaru's sensors in real-time and find out the root cause of the P0377 fault before going to the shop.
👉 Diagnose my Subaru for FreeTo clear the engine light and read the P0377 code from your phone, you need an OBD2 adapter compatible with the Subaru ECU.
🛒 View Compatible Scanner on Amazon