# 1998 Ford Mustang CEL stays on **URL:** \ **Category:** Maintenance/Repairs\ **Tags:** mustang, ford\ **Created:** [January 2, 2020, 9:44pm UTC](https://community.cartalk.com/t/1998-ford-mustang-cel-stays-on/155765 "2020-01-02T21:44:35Z")\ **Posts on this page:** 3\ **Page:** 1
**Author:** ![TinaSpencer](https://avatars.discourse-cdn.com/v4/letter/t/97f17d/32.png) [@TinaSpencer](https://community.cartalk.com/u/TinaSpencer)\ **Post date:** [January 2, 2020, 9:44pm UTC](https://community.cartalk.com/t/1998-ford-mustang-cel-stays-on/155765/1 "2020-01-02T21:44:35Z")
Check engine light wont go off. I have had the codes ran twice. Both times it said PCV Valve. It has now been replaced twice, it still wont stay off. ---
**Author:** ![common-sense-answer](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/common-sense-answer/32/716_2.png) [@common-sense-answer](https://community.cartalk.com/u/common-sense-answer)\ **Post date:** [January 3, 2020, 11:58am UTC](https://community.cartalk.com/t/1998-ford-mustang-cel-stays-on/155765/2 "2020-01-03T11:58:09Z")
> [@TinaSpencer](#): > > Check engine light wont go off. I have had the codes ran twice. Both times it said PCV Valve. It has now been replaced twice, it still wont stay off. **A DTC (diagnostic trouble code) is not intended to inform one which part to replace** (too bad itโ€™s not that simple), it is meant to tell one which system or systems (comprised of many parts/components) is detecting a problem. Proper diagnosis of the PCV system and other engine inputs to that system need trouble shooting by a knowledgeable auto technician. _ **CSA** _ ๐ŸŒด ๐Ÿ•ถ ๐ŸŒด ---
**Author:** ![Mustangman](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/mustangman/32/44130_2.png) [@Mustangman](https://community.cartalk.com/u/Mustangman)\ **Post date:** [January 3, 2020, 12:57pm UTC](https://community.cartalk.com/t/1998-ford-mustang-cel-stays-on/155765/3 "2020-01-03T12:57:57Z")
+1 to @common_sense_answer Agree completely.