P247B code meaning
Exhaust Gas Temperature Out of Range (Bank 1 Sensor 4)
Powertrain system Generic code P24xx codes Check engine light
What P247B means
P247B concerns the last probe in the bank 1 chain. In Ford's 2015 6.7L overview that is EGT14, mounted downstream of the particulate filter, so it sees the heat that leaves the filter during regeneration. Ford's 2015 diesel summary is the only public maker document with this code; it pairs it with P2470 and P2471 and apply the same high-side limit of about 1150 °C, monitored continuously over some 2 s. The 2023 summary checks probe 4 against a model (P246E) instead. A real reading near the limit at the filter outlet hints at a thermal runaway in the filter, which can crack the substrate, so the vehicle should be inspected promptly.
P247B at a glance
- Check engine lightYes, usually on
- Emissions testCan fail
- Limp modePossible
- Repair difficultyHard
- Typical labor0.5 to 5 hours
- Clears after repairWhen cleared with a scanner
Symptoms of P247B
- MIL on
- Regeneration stopped, filter load warning possible
- Power reduction
Common causes of P247B
- Most likelyThermal runaway in the particulate filter
- PossibleProbe reading too high
- Less likelyUnburnt fuel reaching the filter from injectors or a dosing valve
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
Egt sensor b1s4
What each part of P247B means
| P | Powertrain system: engine, fuel system, ignition, emissions and transmission. |
| 2 | Generic code (second SAE range): it means the same on every make. |
| 4 | Area: auxiliary emission controls (catalytic converter, EGR, EVAP). |
| 7B | The exact fault in that area. |
What to do next
- Note P247B 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 P247B
What does P247B mean?
P247B means "Exhaust Gas Temperature Out of Range (Bank 1 Sensor 4)". P247B concerns the last probe in the bank 1 chain. It is a generic code, so it means the same on every make.
Is it safe to drive with P247B?
Drive gently and only to a workshop. With P247B the car can go into limp mode (reduced power) to protect itself.
Will P247B fail an emissions test?
Yes, it can. P247B 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 P247B to fix?
Difficulty: hard. A typical repair takes 0.5 to 5 hours of work. This is a job for a workshop.
Will P247B clear itself after the repair?
Clear the code with a scanner after the repair. If the fault is fixed, it does not come back.