P0E59 code meaning
DC/DC Converter Temperature Sensor C Circuit Range/Performance
Powertrain system Generic code P0Exx codes Check engine light
What P0E59 means
P0E59 is the best-documented member of this group. Ford's hybrid OBD summaries from 2015 to 2019 assign it to the inductor temperature sensor of the variable voltage converter and monitor it without pause once 500 ms have passed since power-up, provided the 12 V supply lies between 6 and 19 V. It fails on any of three conditions: a sensor voltage under 0.067 V or over 4.86 V, an inductor reading above 165 °C for 1 s, or a value more than 30 °C away from engine coolant temperature after a soak of 180 minutes. Ford thus folds the electrical range checks into this code instead of using P0E5A/P0E5B. FCA also uses P0E59 on the 2021 Ram 1500 eTorque; bulletin 08-037-21 makes it a one-trip code with new HCP software. Sensors A and B have P0C39 and P0C3E as their plausibility codes.
P0E59 at a glance
- Check engine lightYes, usually on
- Emissions testCan fail
- Limp modePossible
- Repair difficultyWorkshop only
- Typical labor0.3 to 5 hours
- Clears after repairAfter a drive cycle
Symptoms of P0E59
- MIL on, at FCA after one faulty drive
- Reduced hybrid assist or electric driving
- Hybrid system warning
Common causes of P0E59
- PossibleInductor temperature sensor drifting, reading off after cold soak
- PossibleInductor really overheating, e.g. due to weak electronics cooling
- PossibleHybrid control software (FCA HCP update)
- Less likelyShort or open in the sensor circuit (Ford range limits)
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
Dcdc converter temp sensor cWiring harnessDcdc converter
What each part of P0E59 means
| P | Powertrain system: engine, fuel system, ignition, emissions and transmission. |
| 0 | Generic code: it means the same on every make (SAE standard). |
| 59 | The exact fault in that area. |
What to do next
- Note P0E59 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 P0E59
What does P0E59 mean?
P0E59 means "DC/DC Converter Temperature Sensor C Circuit Range/Performance". P0E59 is the best-documented member of this group. It is a generic code, so it means the same on every make.
Is it safe to drive with P0E59?
Drive gently and only to a workshop. With P0E59 the car can go into limp mode (reduced power) to protect itself.
Will P0E59 fail an emissions test?
Yes, it can. P0E59 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 P0E59 to fix?
Difficulty: workshop only. A typical repair takes 0.3 to 5 hours of work. This is a job for a workshop.
Will P0E59 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.