P26E0Sensor Power Supply D Circuit Low
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Matters for the ITP
- Can trigger limp mode
- How the car detects it
- P26E0 means the fourth sensor supply output of the control module is pulled below its normal level. Deutz documents it for the fourth ECU sensor supply, SPN 3512, in two variants: excessive current or a grounded circuit (FMI 6), and a reading below the physical limit with top severity (FMI 1). In practice a single sensor with an internal short, or a chafed supply wire touching ground, loads the output so much that the module limits or switches it off. All other sensors on the same rail then lose their feed too. A good strategy is to unplug the sensors on supply D one by one and watch whether the voltage recovers. No other maker publishes the code; CARB requires such supplies to be monitored when emission-related sensors depend on them.
- What you may notice
- Check engine light
- Group of sensor faults appearing at once
- Engine derate or emergency mode
- Likely causes
- LikelyOne sensor on supply D with an internal short pulling the output down
- PossibleSupply wire chafed and touching engine ground
- RareMoisture in a sensor plug bridging supply and ground
- Inspection (ITP)
- Matters for the ITP. While the check-engine light is on, the car fails the emissions check.
- Repair
- Medium · Usually a job for a workshop.Typical cost: €50 – €900
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.