Jenn-Air Oven Error Code 1c5c

Error code 1c5c on a Jenn-Air oven indicates a VCC or ground fault detected at a specific test point on the electronic control board. VCC refers to the supply voltage rail that powers the logic circuits on the board. When the control's internal diagnostics measure voltage at this test point and find a reading outside the expected range, whether due to excess voltage, low voltage, or an improper ground reference, it logs this fault code. Importantly, the control takes no automatic corrective action when this code appears; it simply flags the condition for diagnostic purposes.

The test point referenced in this fault is a physical location on the control board used by technicians to probe voltage levels during diagnosis. A fault here typically points to a problem within the control board itself, such as a failed voltage regulator, a short on the power supply circuit, or a degraded ground path on the board. External wiring issues feeding into the board, including loose ground connections at the board harness connector or damaged wiring between the terminal block and control, can also produce this fault by corrupting the voltage reference the board expects to see.

Because the control takes no action in response to this fault, the oven may continue to operate normally or may behave erratically depending on how severely the voltage rail is affected. Diagnosis should begin by probing VCC and ground at the designated test point with a multimeter to confirm whether the supply voltage is within spec. If voltage readings are correct at the test point, the fault may be intermittent or caused by a marginal component on the board itself.