04 GS300 Codes P0980 & P0505
Thread Starter
3rd Gear
Joined: Jan 2024
Posts: 3
Likes: 0
From: Montana
04 GS300 Codes P0980 & P0505
Hello, I just purchased an 04 GS300 with 218k mi. Went through it and everything looked and felt mechanically sound. Decided to take a short drive out of town (138 miles all together) and it did great.
Last night, an accident behind me occurred, and in order to evade it, I accelerated pretty hard and to the left, out of the way. In doing so I broke traction, the VSC did its job and corrected, and all was fine. We stopped and assisted people in the accident, and when I got back to my car and started it, the CEL, VSC, and VSC OFF lights were all on. I very carefully drove it home and ran the codes. It threw a P0980 and a P0505. I cleared the codes and drove it normally today to see if anything felt off. It is shifting normally, and running smooth. Unfortunately, the codes came back, so I guess they are for real.
Is it total happenstance that this occurred right after my near collision, or could they somehow be related? Any insight on these codes? Im guessing the shift solenoid is a straight replacement, but its sounding like the Idle Air Control code could be anything from a faulty valve, MAF, or dirty/failing throttle body.
Any and all insight is welcome and appreciated.
Thank you 😊
Last night, an accident behind me occurred, and in order to evade it, I accelerated pretty hard and to the left, out of the way. In doing so I broke traction, the VSC did its job and corrected, and all was fine. We stopped and assisted people in the accident, and when I got back to my car and started it, the CEL, VSC, and VSC OFF lights were all on. I very carefully drove it home and ran the codes. It threw a P0980 and a P0505. I cleared the codes and drove it normally today to see if anything felt off. It is shifting normally, and running smooth. Unfortunately, the codes came back, so I guess they are for real.
Is it total happenstance that this occurred right after my near collision, or could they somehow be related? Any insight on these codes? Im guessing the shift solenoid is a straight replacement, but its sounding like the Idle Air Control code could be anything from a faulty valve, MAF, or dirty/failing throttle body.
Any and all insight is welcome and appreciated.
Thank you 😊
Intermediate
Joined: Jul 2017
Posts: 431
Likes: 194
From: NC
I wonder if getting on it hard in that instance was enough to throw that solenoid out of spec? But here are the FSM troubleshooting steps for those codes:
https://charm.li/Lexus/2004/GS%20300...oubleshooting/
https://charm.li/Lexus/2004/GS%20300...oubleshooting/
Interesting that it says to address the code for the shift solenoid first if other codes are present with P0505.
https://charm.li/Lexus/2004/GS%20300...oubleshooting/
https://charm.li/Lexus/2004/GS%20300...oubleshooting/
Interesting that it says to address the code for the shift solenoid first if other codes are present with P0505.
Thread Starter
3rd Gear
Joined: Jan 2024
Posts: 3
Likes: 0
From: Montana
Lights Went Off
Well, oddly, after a 30 mile drive today (still shifting and running smoothly) the CEL and VSC lights went out
not sure what to think about that.
I will still take it to my mechanic this upcoming week.
not sure what to think about that.
I will still take it to my mechanic this upcoming week.
Thread
Thread Starter
Forum
Replies
Last Post
pengy99
GS - 2nd Gen (1998-2005)
4
Jun 17, 2018 09:12 PM
red13
RX - 1st Gen (1999-2003)
17
Oct 27, 2011 07:54 AM
pitmanr200
GS - 2nd Gen (1998-2005)
9
Aug 9, 2008 09:27 PM
joshoowa
GS - 2nd Gen (1998-2005)
9
Dec 14, 2005 07:15 PM
