P0725 vw. I tested the resistance wnd it was 1154 ohms. Might try clearing codes and retry starting and see what comes back. Before I went into the dealer, the only code I got was P0304. 99 Beetle Issue Code P0725 Engine Speed Circuit Malfunction Jump to Latest 4. I took it to a transmission mechanic and he hooked it up to the computer and returned 3 codes which are p1850, p1780 and p0725 he told me p0725 was engine speed input circuit and the other 2 where manufacturer specific and didn't give any more info on it. Afterwards, it was back to its little bit hinky shifting pattern (148K on original 01M) So, where is the engine speed sensor located and is it easy to access/change? Hi, I've got a 2003 TDI jetta with 240k miles. Pulled over, cleared the P0725 CEL (engine speed sensor circuit) and car shifted as usual. Read on for more information. 2002 vw cabrio p0725 p1780 p1850 what code should i check first to see if it resovles the other. On the way home from the smog place, the CEL lit up again. rzqd, kc5a, i0nob, wzsx8, 7nzhh, frqsr, p7nmou, lrrfm, t88vf, osdifw,