p0101, p2178, p2188, p0133 codes 09 Volvo S60

wrecks · Post by **wrecks** » 30 Dec 2018, 22:16

139k miles. car hunts at idle. engine light came on received p0101, replaced MAF cleared faults
engine still hunts at idle. code p0133 replaced O2 sensor cleared faults.
engine light came back on p0101, p2178, p2188, p0133 codes
after a lot of reading on different sites, I cleaned ETC it was really gummed up.
cleared faults, engine runs smooth as silk

Fumbletongue · Post by **Fumbletongue** » 26 Apr 2022, 11:44

I have all the same error codes. Replaced MAF but it did not solve the problem. What did you clean or what is ETC you mention?

93SCMax · Post by **93SCMax** » 26 Apr 2022, 12:12

I imagine the original poster used ETC = Electronic Throttle Control. In Volvo speak, it's really an ETM = Electronic Throttle Module. It attaches to the intake manifold and can get gunked up with carbon, etc. Search ETM cleaning or read about them on the ETM forum. Lots of electronic problems with early year ETM's. Yours may just need a good cleaning or possibly a throttle pedal sensor (cleaned or new).

Good luck.