# Check Engine Light (CEL) **URL:** \ **Category:** Maintenance/Repairs\ **Created:** [August 16, 2010, 6:17am UTC](https://community.cartalk.com/t/check-engine-light-cel/53614 "2010-08-16T06:17:18Z")\ **Posts on this page:** 3\ **Page:** 1
**Author:** ![sciconf](https://avatars.discourse-cdn.com/v4/letter/s/919ad9/32.png) [@sciconf](https://community.cartalk.com/u/sciconf)\ **Post date:** [August 16, 2010, 6:17am UTC](https://community.cartalk.com/t/check-engine-light-cel/53614/1 "2010-08-16T06:17:18Z")
1999 Acura Integra 73k miles On Jul 28th Dealer did an inspection - no issues. Most fluids are changed (didn’t check the AT fluid today) Today, I drive from San Jose to Santa Cruz with A/C on and by the time I arrived there, I noticed the CEL is steadily on. I never had this issue on any of my cars. I did drove it back with the CEL on - runs fine for me. It only pulled one code - the OBD II tried to pull another code, but no luck. It appears if it gives P0700, then it should give another code with it. P0700: Transmission Control System (MIL request) What’s happening? ---
**Author:** ![cigroller](https://avatars.discourse-cdn.com/v4/letter/c/c68b51/32.png) [@cigroller](https://community.cartalk.com/u/cigroller)\ **Post date:** [August 16, 2010, 12:26pm UTC](https://community.cartalk.com/t/check-engine-light-cel/53614/2 "2010-08-16T12:26:08Z")
The code is telling you that someone needs to scan the transmission. Maybe it sounds odd, but all the code says is that the transmission control detected a problem. So yes, there are probably more codes, but those are probably stored in a TCM (rather than the PCM). There are many codes that standard OBD readers won’t pick up (like transmission or body codes). So your best bet is to take it to a local, independent transmission shop and have them scan it. ---
**Author:** ![sciconf](https://avatars.discourse-cdn.com/v4/letter/s/919ad9/32.png) [@sciconf](https://community.cartalk.com/u/sciconf)\ **Post date:** [August 16, 2010, 4:49pm UTC](https://community.cartalk.com/t/check-engine-light-cel/53614/3 "2010-08-16T16:49:34Z")
its P0740 - Torque converter clutch malfunction It maybe due to a earth connection - not sure how to check it?