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Code 340

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5rivers
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Year and Model: V70 1998 T5
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Post by 5rivers »

Was heading out to pickup some family members, and the V70 turned over but would not start. Tried a few times, but no start. Plugged in the code reader, came back with code 340. I cannot find a solid reference to this...but code 343 is a faulty fuel relay.
Anyone know what code 340 refers to?

Recently had to replace a spark plug as the old beast was like chugging along then would ride smoothly, then chug again....Also installed a newer distributor cap and rotor. Still need to replace all the spark plugs, and check resistance on a spare set of spark plug wires just in case the current ones in use are faulty.

Appreciate any/all replies and suggestions!
5rivers
1998 V70 M56, silver/grey, has tranny issues, #?# owner, 330,xxx miles, a handy parts car
1998 V70 AT, nautical blue, 2nd owner, 260,000 miles, Sold
1998 V70 AT, T5, forest green, 3rd owner, 172,300 miles, Mimas 16" rims
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abscate
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Post by abscate »

Is that P0340 read through OBD?

P034x are cam sensor code family , but I’m not sure that code is reported correctly

Have a good,look at your cam sensor wiring and make sure it Is routed like OEM
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5rivers
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Year and Model: V70 1998 T5
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Post by 5rivers »

Yes, from an OBD2 code reader. Attached the reader twice, same code each time, P0340.
Switched out the fuel relay with another working one, that did NOT contribute to the car starting.
I will take a look at the wiring you suggest and report back.
Thanks, S. :)
5rivers
1998 V70 M56, silver/grey, has tranny issues, #?# owner, 330,xxx miles, a handy parts car
1998 V70 AT, nautical blue, 2nd owner, 260,000 miles, Sold
1998 V70 AT, T5, forest green, 3rd owner, 172,300 miles, Mimas 16" rims
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RickHaleParker
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Post by RickHaleParker »

Clean the connector to the Cam sensor(s) and check the wires for shorts and opens.

Possible source
  • short-circuit to ground or supply voltage in signal cable
    open-circuit in signal cable, power cable or ground lead
    contact resistance in terminals
    defective camshaft position (CMP) sensor.
22 year old car. The wiring is going to need some maintenance. An afternoon spent cleaning electrical connectors and inspecting wires would not be a waste of time.
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