IDM Failure
11 articles · 2 makes affected
What is P1298?
P1298 indicates an IDM (Ignition Diagnostic Monitor) failure, which is a powertrain issue affecting the engine's ignition system. This medium-severity code typically triggers when the vehicle's computer detects a problem with the ignition control module or related wiring, often seen in Honda Accord models according to owner reports. The code can cause various warning lights and drivability issues, though owners note the check engine light doesn't always flash like with traditional misfires.
Common Causes
- ●Wiring harness damage from rodent chewing (mentioned in 8% of Honda Accord cases)
- ●Faulty ignition control module (implied by code definition)
- ●Electrical connection issues in the ignition system (based on code description)
Symptoms You May Notice
- ●Multiple warning lights illuminating on the dashboard (reported in Honda Accord cases)
- ●Check engine light staying solid rather than flashing (mentioned by owners)
- ●No noticeable drivability issues in some cases (owners reported normal operation with the code present)
How to Fix It
- ●Repair rodent-damaged wiring harness (cost varies based on damage extent, moderate difficulty)
- ●Replace ignition control module ($400-$800 based on similar component replacements, moderate difficulty)
- ●Complete transmission rebuild or replacement ($400-$8000 depending on approach, very high difficulty for DIY)
Owner Statistics
Based on 43,501 real owner discussions • 1864 confirmed solutions
About This Data
Statistics are aggregated from real owner discussions on Reddit, automotive forums, and YouTube comments. All data is anonymized and represents actual repair experiences reported by vehicle owners.
Frequently Appears With
These codes often appear together in owner reports. Check these if you see P1298.
Based on analysis of 13 owner reports where multiple codes appeared together.