P2473 code meaning
Exhaust Gas Temperature Sensor Circuit (Bank 2 Sensor 4)
Powertrain system Generic code P24xx codes Check engine light
What P2473 means
P2473 covers the wiring of probe number four in the bank 2 exhaust line as a whole, so it only occurs on engines with two separate exhaust paths and a long sensor chain on each. The controller sets it when the probe line delivers a value it cannot assign to a clean low or high fault, for instance an open circuit or a sensor reporting an internal error. No maker documents P2473 publicly. The bank 1 counterpart P246E shows how it can be used: Ford's 2023 diesel summary compares that probe against a temperature model after a cold start. CARB demands circuit continuity checks on every emission-relevant input. For the driver it means a lit MIL and often a paused particulate filter regeneration.
P2473 at a glance
- Check engine lightYes, usually on
- Emissions testCan fail
- Limp modeNot expected
- Repair difficultyMedium, DIY possible
- Typical labor0.3 to 1.5 hours
- Clears after repairWhen cleared with a scanner
Symptoms of P2473
- MIL on
- No usable value for bank 2 probe 4 in live data
- Filter regeneration suspended
Common causes of P2473
- Most likelyBroken wire or unplugged connector at the bank 2 probe
- PossibleProbe element burnt out
- Less likelyFault in the control unit input stage
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
Egt sensor b2s4Egt wiring
What each part of P2473 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). |
| 73 | The exact fault in that area. |
What to do next
- Note P2473 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 P2473
What does P2473 mean?
P2473 means "Exhaust Gas Temperature Sensor Circuit (Bank 2 Sensor 4)". P2473 covers the wiring of probe number four in the bank 2 exhaust line as a whole, so it only occurs on engines with two separate exhaust paths and a long sensor chain on each. It is a generic code, so it means the same on every make.
Is it safe to drive with P2473?
Usually yes, for a short time, if the check engine light is steady and the car drives normally. If the light flashes or the car runs badly, stop and have it checked.
Will P2473 fail an emissions test?
Yes, it can. P2473 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 P2473 to fix?
Difficulty: medium. A typical repair takes 0.3 to 1.5 hours of work. A careful DIY repair is possible with basic tools and a scanner.
Will P2473 clear itself after the repair?
Clear the code with a scanner after the repair. If the fault is fixed, it does not come back.