P2227
Thread Starter
Pro
Joined: Jul 2006
Posts: 552
Likes: 28
From: North Las Vegas Nevada
P2227
Started the car yesterday afternoon and immediately got a steady engine check light. The DIC also advised me that engine power would reduced. Reset the DIC and attached my code reader--P2227. Barometric pressure sensor. Assuming that is the MAP?? I have started and driven the car several times since then and it runs fine. The DIC never again displayed a reduced power message, but the steady engine check light has stayed on . The car has 12000 miles and it is 100% stock, to include the tune. Did a forum search, and it seems that the only C7 cars that have encountered a P2227 are the Stingrays that have added superchargers. Will take it in on Tuesday for the dealer to figure it out. Any others experience a P2227 code?? Thanks for any inputs
Instructor
Joined: Sep 2007
Posts: 239
Likes: 22
From: Stockbridge GA
Started the car yesterday afternoon and immediately got a steady engine check light. The DIC also advised me that engine power would reduced. Reset the DIC and attached my code reader--P2227. Barometric pressure sensor. Assuming that is the MAP?? I have started and driven the car several times since then and it runs fine. The DIC never again displayed a reduced power message, but the steady engine check light has stayed on . The car has 12000 miles and it is 100% stock, to include the tune. Did a forum search, and it seems that the only C7 cars that have encountered a P2227 are the Stingrays that have added superchargers. Will take it in on Tuesday for the dealer to figure it out. Any others experience a P2227 code?? Thanks for any inputs
Then make sure all the vacuum lines are all OK..the codes don't always point to the exact issue in my experience.
Le Mans Master
Joined: Aug 2005
Posts: 5,375
Likes: 328
From: CA.
St. Jude Donor '13-'14-'15
Looking at the codes on any C7 the baro table is used almost exclusively on the VVT or camshaft phasing tuning--Depending on the barometer reading the ECM changes the camshaft timing--- Most of the changes are minimal however at WOT the timing changes go to close to "0"--- It sounds like it may be a false code due to some glitch---I've tuned dozens of C7's and have never seen this code-- I would have it cleared and if it does not re-appear--then most likely it was a false trigger
PS: I have see other false trigger codes on my car and was worried at 1st as it went into reduced power mode--But I shut it down and everything was fine and went away -- then I cleared them when I got home and they never came back---
PS: I have see other false trigger codes on my car and was worried at 1st as it went into reduced power mode--But I shut it down and everything was fine and went away -- then I cleared them when I got home and they never came back---
Thread Starter
Pro
Joined: Jul 2006
Posts: 552
Likes: 28
From: North Las Vegas Nevada
Codes
Looking at the codes on any C7 the baro table is used almost exclusively on the VVT or camshaft phasing tuning--Depending on the barometer reading the ECM changes the camshaft timing--- Most of the changes are minimal however at WOT the timing changes go to close to "0"--- It sounds like it may be a false code due to some glitch---I've tuned dozens of C7's and have never seen this code-- I would have it cleared and if it does not re-appear--then most likely it was a false trigger
PS: I have see other false trigger codes on my car and was worried at 1st as it went into reduced power mode--But I shut it down and everything was fine and went away -- then I cleared them when I got home and they never came back---
PS: I have see other false trigger codes on my car and was worried at 1st as it went into reduced power mode--But I shut it down and everything was fine and went away -- then I cleared them when I got home and they never came back---
2nd Gear
Joined: Apr 2017
Posts: 2
Likes: 1
From: CA
Update on C7 Z06 P2227 code
Started the car yesterday afternoon and immediately got a steady engine check light. The DIC also advised me that engine power would reduced. Reset the DIC and attached my code reader--P2227. Barometric pressure sensor. Assuming that is the MAP?? I have started and driven the car several times since then and it runs fine. The DIC never again displayed a reduced power message, but the steady engine check light has stayed on . The car has 12000 miles and it is 100% stock, to include the tune. Did a forum search, and it seems that the only C7 cars that have encountered a P2227 are the Stingrays that have added superchargers. Will take it in on Tuesday for the dealer to figure it out. Any others experience a P2227 code?? Thanks for any inputs
