Car keeps stalling codes: P1298 and P0700

Tiny
AKORD
  • MEMBER
  • 1999 HONDA ACCORD
  • 2.3L
  • 4 CYL
  • 2WD
  • AUTOMATIC
  • 160 MILES
Hi everyone,
I have a Honda accord lx 1999.
the car hard to start and keeps shut off after a minute or so, and when I put load the car shuts off instantly, the engine runs rough and shaking, but when drive it won’t turn off.
no check engine light.


month ago I had a check engine light, and turn signal was working,
codes: P1298, and P0700,
I get the turn signal fixed by reset clock/ECM fuse. Also I changed ELD because I had a stored code p1298. It could be the issue related.
Saturday, November 29th, 2025 AT 8:17 AM

7 Replies

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 54,137 POSTS
Since you already replaced the ELD I would check the main ground from the battery to the engine block and the ground to the chassis. These must be in good shape or you will get this code.

CODE: P1298 - ELD (Electric Load Detector) Circuit High Voltage

1. Failing Alternator (low output or shorted stator)
2. Bad Engine Ground / Battery Cable

Here is a guide to help check the alternator charging, also if the battery is more than 4 year old a would get a new one, or at least have it tested at the auto parts store.

https://www.2carpros.com/articles/how-to-check-a-car-alternator

and

https://www.2carpros.com/articles/car-battery-load-test

P0700 almost always appears when:

1. The PCM is losing stable voltage
2. The electrical system is dropping under load
3. Alternator output is low or intermittent
4. Engine grounds are weak

Please go over these guides and get back to us.
Was this
answer
helpful?
Yes
No
+1
Monday, December 1st, 2025 AT 9:40 AM
Tiny
AKORD
  • MEMBER
  • 5 POSTS
Thanks Ken for responding.
After changing the ELD, the stored code P1298 is gone.
Right now, I do not have any pending or stored code.
Was this
answer
helpful?
Yes
No
Monday, December 1st, 2025 AT 9:58 AM
Tiny
AKORD
  • MEMBER
  • 5 POSTS
I will try to upload a short video later on.
Was this
answer
helpful?
Yes
No
Monday, December 1st, 2025 AT 9:58 AM
Tiny
AKORD
  • MEMBER
  • 5 POSTS
The hard to start, but when it starts and runs for a few minutes then shuts off.
Video (Click to make bigger)
Thumb
Was this
answer
helpful?
Yes
No
Monday, December 1st, 2025 AT 10:56 AM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 54,137 POSTS
Thanks for the video, I can hear a vacuum leak which will make it run like this, try to follow the hissing noise to find the leak, it sounds like a vacuum hose is off. Here is a video to help you find the leak, you can use carb spray as well.

https://www.youtube.com/watch?v=LRKWV4Are5c&t

Please go over this guide as well

https://www.2carpros.com/articles/stall-at-idle

Please let us know what happens.
Was this
answer
helpful?
Yes
No
+1
Tuesday, December 2nd, 2025 AT 9:06 AM
Tiny
AKORD
  • MEMBER
  • 5 POSTS
I have a smoke machine, and I will try it out.
Thanks Ken I appreciate it.
Was this
answer
helpful?
Yes
No
Tuesday, December 2nd, 2025 AT 11:02 AM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 54,137 POSTS
Nice! We are close to fixing it :0)
Was this
answer
helpful?
Yes
No
+1
Wednesday, December 3rd, 2025 AT 9:17 AM

Please login or register to post a reply.

Related Engine Stall While Driving Content

Code Read Retrieval/Clear Honda
VIDEO
Code Read Retrieval/Clear Honda
Instructional repair video
Engine Stalls While Driving
GUIDE
Engine Stalls While Driving
An engine that stalls while driving and then starts back up again, either immediately or after a short time is different from an engine that just wont start or if the...
VIEW MORE