I have 02 focus 2L spi...have had to replace a lot of things lately but seemed to be running fine (besides what felt like occasional transmision slipage or might have even been just a loss of power?*would have to floor it to pick up speed* but only sometimes). driving on freeway last nite we felt a sudden little jolt while going about 70mph & it just shut off. tried to turn back on while still moving no luck but check engine lite was on. so we had towed & I scanned it & it says PO340 cam position sensor a bank 1 circiut malfultuction. My boyfriend (mechanic although not as knowldgable w newer cars as w hotrods)& tow guy said when turning over it sounds like timing belt broke. also heard how that now our motor mite be blown because the timing belt breaking would cause damaged pistons...is that always the case? would that code be set from broke belt? any input would be greatly appreciated...thanks so much...nicolette
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2002 Ford Focus
Question: focus shut off on freeway-no restart- code po340
Answer #1Pvt-Public July 17, 2010, 14:13Master
Yes you could get a cam sensor code, because when the timing belt breaks or even jumps a few teeth the computer will either see no cam rotation or cam sensor signal out of synch with the crankshaft sensor. On the good side according to the Gates Belts, Timing Belt Guide you do not have an interference type engine, so you probably DID NOT damage the valves,head and/or pistons.