P0021 then p0340
06-02-2017, 07:31 AM
#1
Member
Thread Starter
Join Date: Oct 2008
Location: Fayetteville, NC
Posts: 246
P0021 then p0340
Ok guys been awhile since I've posted on here...my 5.5gen has been great to me...up until recently...so here's my dilemma...SES light came on did car diagnostics using the pedal method...p0021 ok after extensive research here I got camshaft position sensor exhaust side...or check oil levels...i do have a slight oil leak and burn...so did an oil change and reset the code. Good to go for a few months...then boom SES light again, this time p0340...camshaft sensor firewall side...so out of curiosity I cleared that and the 0340 code shows up about 70miles of driving later, now the car stalls intermittently and takes a few seconds more to crank up...went to advance auto to have them pull codes just to see if my code matches and what you think, they don't. Advance auto gives me a p0021 and p0011...what the hell am I missing here and which sensor should I replace first to see if my problem is fixed? Cars self diagnostic hasn't given me the p0021 again yet, only p0340.
06-02-2017, 10:25 AM
#2
Senior Member
Join Date: Mar 2002
Location: Ontario, Canada
Posts: 1,114
Just replace the camshaft sensor indicated by P0340 which you are getting. Even if it's still good, they all go after about this many years. Replaced mine last year at 11 YO 100k miles, I was lucky it was the front bank. Having the rear bank sensor in the glove box as that one going is a matter of time.