P0E83 code meaning
Auxiliary Cooling System Coolant Temperature Sensor A Circuit Low
Powertrain system Generic code P0Exx codes Check engine light
What P0E83 means
P0E83 means the signal voltage of temperature sensor A in the auxiliary cooling loop has fallen below its valid floor. Coolant sensors are normally NTC thermistors whose resistance drops as they warm, so a low voltage reads as extremely hot coolant. When the value is beyond anything physically possible, the cause is usually a signal wire touching ground or a shorted sensor rather than real overheating. No manufacturer documents P0E83 publicly. On Ford's 2019 hybrids the equivalent fault of the heater-loop sensor ECT2 is P2184, recorded after 5 seconds of driver fault status. CARB requires out-of-range detection for such temperature inputs. The module may then run pumps or fans on safe defaults. P0E84 is the opposite, a reading stuck cold; P0E82 covers values inside the range that are implausible.
P0E83 at a glance
- Check engine lightYes, usually on
- Emissions testCan fail
- Limp modeNot expected
- Repair difficultyEasy, DIY possible
- Typical labor0.3 to 1.5 hours
- Clears after repairWhen cleared with a scanner
Symptoms of P0E83
- Check engine light
- Coolant pump or fan running continuously
- Implausibly high temperature shown on a scan tool
Common causes of P0E83
- Most likelySensor signal wire shorted to ground
- PossibleInternally shorted sensor A
- Less likelyGenuinely very hot coolant in the auxiliary loop
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
Aux cooling coolant temp sensor aWiring harness
What each part of P0E83 means
| P | Powertrain system: engine, fuel system, ignition, emissions and transmission. |
| 0 | Generic code: it means the same on every make (SAE standard). |
| 83 | The exact fault in that area. |
What to do next
- Note P0E83 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 P0E83
What does P0E83 mean?
P0E83 means "Auxiliary Cooling System Coolant Temperature Sensor A Circuit Low". P0E83 means the signal voltage of temperature sensor A in the auxiliary cooling loop has fallen below its valid floor. It is a generic code, so it means the same on every make.
Is it safe to drive with P0E83?
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 P0E83 fail an emissions test?
Yes, it can. P0E83 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 P0E83 to fix?
Difficulty: easy. 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 P0E83 clear itself after the repair?
Clear the code with a scanner after the repair. If the fault is fixed, it does not come back.