P2698 code meaning
Exhaust Aftertreatment Fuel Injector A Performance
Powertrain system Generic code P26xx codes Check engine light
What P2698 means
P2698 is not about wiring but about whether the exhaust fuel doser does what it is told; most often the check looks for leakage when no dosing is requested. Ford's 3.2 L Transit (2017 and 2018 summaries) compares a measured temperature downstream of the injection point with a model after at least 6 h engine-off. The 2023 6.7 L Super Duty uses a model check after 21,600 s soak plus a second logic that balances oxygen mass before and after the catalyst. Volvo and Mack article KC-90 (model years 2016–17) warns the code can appear without symptoms and points to exhaust sensors, a low-flow nozzle, the AHI module and the catalyst; Mack bulletin GDC19-014 (US19) first updates engine software. Ram also lists P2698 in a 2026 PCM flash for 6.7 L Cummins chassis cabs.
P2698 at a glance
- Check engine lightYes, usually on
- Emissions testCan fail
- Limp modePossible
- Repair difficultyHard
- Typical labor1 to 5 hours
- Clears after repairAfter a drive cycle
Symptoms of P2698
- MIL on, often without noticeable drivability change
- Regenerations fail or take unusually long
- Higher fuel use or white exhaust smoke
Common causes of P2698
- Most likelyDoser valve or nozzle leaking fuel into the exhaust
- PossibleCoked nozzle or line causing low flow
- PossibleExhaust temperature sensor drifting and skewing the model comparison
- Less likelyEngine software needing the manufacturer update
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
Hc dosing injectorExhaust gas temperature sensorDiesel oxidation catalyst
What each part of P2698 means
| P | Powertrain system: engine, fuel system, ignition, emissions and transmission. |
| 2 | Generic code (second SAE range): it means the same on every make. |
| 6 | Area: computer (engine control module) and output circuits. |
| 98 | The exact fault in that area. |
What to do next
- Note P2698 and any other codes stored with it: several codes together often point to one cause.
- Check for loose connectors and damaged wiring around the parts the code names.
- Check open recalls for your car: some faults are fixed for free by the dealer. Enter your VIN.
- Clear the code only after the repair. If it comes back, the fault is still there.
Buying a used car? Scan it for stored codes before you pay. A recently cleared memory can hide a problem.
Questions about P2698
What does P2698 mean?
P2698 means "Exhaust Aftertreatment Fuel Injector A Performance". P2698 is not about wiring but about whether the exhaust fuel doser does what it is told; most often the check looks for leakage when no dosing is requested. It is a generic code, so it means the same on every make.
Is it safe to drive with P2698?
Drive gently and only to a workshop. With P2698 the car can go into limp mode (reduced power) to protect itself.
Will P2698 fail an emissions test?
Yes, it can. P2698 is emissions-related, so most inspection programs fail a car while it is stored or while the check engine light is on.
How hard is P2698 to fix?
Difficulty: hard. A typical repair takes 1 to 5 hours of work. This is a job for a workshop.
Will P2698 clear itself after the repair?
After the repair the car has to complete a drive cycle (a mix of city and highway driving) before the test runs again. Until then the readiness monitor shows "not ready", which can fail an inspection.