7716x

: Both batteries tested fine, and even a bypass of the auxiliary battery didn't fix the crank-but-no-start condition.

The code most famously identifies a 2020 Jeep Gladiator Sport S with exactly 77,16x miles on the odometer. This specific vehicle became the subject of a widely shared automotive mystery when its owner, Tom Nguyen, sought help for a baffling "no start" issue that persisted despite replacing almost every major sensor and electrical component. The Story of the Stall at 77,16x Miles

: The green CAN bus was replaced, and all fuses and relays were swapped, yet the engine remained silent. : Both batteries tested fine, and even a

The Jeep was a reliable daily driver until one morning, shortly after crossing the 77,160-mile mark, it began to act as if it were possessed. It would start perfectly in the driveway, warm up, and even drive for a few miles before abruptly dying. The dashboard would simply flash "Shift to Park," and from that moment on, the engine would crank endlessly but never fire.

: While the fuel pump could be heard priming, even spraying starter fluid directly into the throttle body—a "magic trick" for engines lacking fuel—failed to bring it to life. The Story of the Stall at 77,16x Miles

: A new crankshaft sensor and IAT sensor were installed to no avail.

Despite using professional-grade scan tools, the Jeep refused to throw a single misfire code or diagnostic clue. The story became a cautionary tale in Jeep communities about the complexity of modern automotive electrical systems, where a vehicle with only can become a "paperweight" despite having all the mechanical ingredients to run. The dashboard would simply flash "Shift to Park,"

What followed was an exhaustive mechanical detective story. The owner methodically worked through a checklist of possible culprits: