MIL CODE 171

[MN-Gopher1]

OK, I give!!My 2000 I30 had a code 1320 a few weeks ago. Dealer said that means replacing allof the coils. He said to turn off the engine light and a different code may come up that may indicate which coil is bad(or just replace them all if 1320 comes up again)

Today I get code 171, lean engine, block 1. Not sure what to do now.New NGK plugs, new sensor at front, block one location.

Is the dealership the next stop??

I just added Techron to the gas to see if that straightens it out.What would you suggest??