1996 Honda Civic DX 1.6 P1336 Code: Misfire Diagnosis and Solutions
My 1996 Honda Civic DX 1.6 is showing fault code P1336, which indicates a 'Manufacturer Control Ignition System or Misfire'. The car runs smoothly under normal conditions. I recently replaced the crankshaft position sensor (CKP) behind the harmonic balancer with an OEM part, but the P1336 code persists. After thoroughly inspecting the wiring harness leading to the sensor connector, no visible damage or faults were found. A fellow forum member suggested checking the distributor sensors, and upon inspection, I discovered three heat-cracked magnetic pickup sensors in the distributor. Replacing them with new ones did not resolve the issue. Previously, I heard about a diagnostic method involving a long jumper wire connecting directly from the CKP and distributor sensor connectors to the ECU — bypassing the wiring harness. Has anyone successfully used this technique before? If so, where can I find detailed instructions online? Specifically, which wires should be tapped into and what pin on the ECU connector should be used for connection? Any guidance or references would be greatly appreciated. Thanks in advance!
The P1335/P1336 code is typically caused by two main issues: first, improper routing of the crankshaft sensor harness after a timing belt replacement or alternator installation — where the alternator belt may rub against the harness or the timing belt has jumped a tooth or isn't properly aligned. Second, a faulty wiring connection at the Powertrain Control Module (PCM) or a defective sensor. Always verify that all plug connections are secure and properly seated.