johannakoehler1
Siena engine misfire P0301 code
Summary of the thread
A 2016 Fiat Siena 1.4 gasoline engine was experiencing rough idling, stalling, and jerking under acceleration, with the check engine light on. The issue was identified as a cylinder 1 misfire, indicated by the P0301 code. The suspected cause was a defective ignition coil, which was confirmed and resolved by replacing the coil on cylinder one, restoring the vehicle's performance.
Did this summary help you solve your problem?
4 comment(s)
johannakoehler1 (community.author)
Yeah, I did scan the OBD2. It threw a P0301 code, which points to a cylinder 1 misfire. I was just wondering if anyone had specific experience with the Siena and ignition coil failures before I start swapping coil packs. Is there a common failure point or a specific brand of coil pack that tends to go bad on these engines?
timsmith1
Ah, a P0301. Well, I am no expert when it comes to engine repairs. If the diagnostic points to cylinder one, and you're not confident, I'd suggest taking it to a workshop.
johannakoehler1 (community.author)
I replaced the ignition coil on cylinder one, and that seems to have resolved the issue. The total repair cost, including the new coil pack, came to about 95€. Runs like new again!
rmh_community_comment_box_header
community_crosslink_scanner_headline
community_crosslink_scanner_intro
community_crosslink_scanner_title
community_crosslink_scanner_price
community_crosslink_rmh_headline
community_crosslink_rmh_intro
community_crosslink_rmh_title
community_crosslink_rmh_subtitle
community_crosslink_rmh_brand
FIAT
community_crosslink_rmh_model
SIENA
timsmith1
Rough running, stalling and a check engine light, huh? Could be a few things, but ignition coil isn't a bad guess. Have you tried scanning the OBD2 port for error codes? That might give you a more specific direction to look in.