CUSTOMER CONCERN Engine misfires with no compression on cylinder 3, no oil showing on the dipstick, multiple misfire codes, P1268, P128A, and P2646. CAUSE Compression testing confirmed internal engine and valve damage: cylinders 2 and 3 had no compression and cylinder 4 was also low. CORRECTION Remove and replace the damaged engine assembly, correct the oil level, clear DTCs, and verify compression and engine operation.

CUSTOMER CONCERN The engine misfires with no compression on cylinder 3, no oil registering on the dipstick, cylinder-misfire DTCs and P1286, P128A and P2646. CAUSE Testing confirmed internal engine damage with loss of cylinder compression associated with severe oil consumption. CORRECTION Remove and replace the damaged engine assembly, clear all stored DTCs, and verify compression and normal engine operation.

CUSTOMER CONCERN The engine loses power with DTCs P1286, P128A and P2646. CAUSE The confirmed cases identified an incorrect/low engine-oil level preventing normal rocker-arm oil-pressure and VTEC operation. CORRECTION Correct the engine-oil level, clear P1286, P128A and P2646, and verify engine power and VTEC operation.