Powertrain system fault code
P1299 — Powertrain system fault code. It is a medium-severity fault: you can usually keep driving for short distances. The most common cause is damaged wiring, corrosion or a loose connector in the circuit.
"Caution: ignore it long enough and it gets expensive opinions about your wallet."
P1299 is a powertrain diagnostic trouble code. It identifies a fault related to Your car isn’t acting right, and the Check Engine Light comes on. Your next step is to use your code scanner to find out what’s going on. If you see the P1299 code, you could have some trouble on your hands. The powertrain control module monitors this circuit or component continuously and sets P1299 when the signal or value is outside the expected range, implausible or missing. This can affect engine performance, fuel economy or emissions and usually turns on the check-engine light. The base function may still work, but performance can be affected, so the fault should be diagnosed. Diagnosis generally means inspecting the related wiring, connectors and power/ground references, then verifying the component against specification with a scan tool.
- Check Engine Light
- Reduced engine performance
- Rough idling
- Cylinder misfiring
- Excessively hot engine
| # | Cause |
|---|---|
| 01 | Damaged wiring, corrosion or a loose connector in the circuit |
| 02 | Faulty sensor, actuator or component referenced by the code |
| 03 | Open, short or high resistance in the circuit |
| 04 | Poor power supply or ground reference to the component |
| 05 | Failed control module |
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Coming soonDealership car, motorbike, scootervehicles for saleNo technical service bulletins or recalls currently reference P1299. This section updates automatically when manufacturers publish related bulletins.
In our database P1299 is recorded across 38 vehicle models — most frequently on the Ford F-150, Ford Mustang, Ford Explorer.
A Ford Escape owner reported to NHTSA: “Check engine light, White smoke on cold start, low coolant, P0302 - misfire cylinder 2, P1299 - Cylinder Head Protection Active. No power - limp mode”
YES, WITH CAUTION — get it diagnosed as soon as possible.