P2804: Confirm Ford’s general B-circuit classification before assuming intermittency

P2804 is called an intermittent range-sensor B circuit in the generic dictionary, but Ford's cited summary labels P2804/P2800_01 as a general electrical B fault. That difference must remain visible because the table does not establish a specific intermittent-event threshold for every P2804 report.

Preserve the actual reporting format

Ford separately assigns B frequency, low and high categories to P2801, P2802 and P2803. It also lists A/B correlation as P2805. A broad B-circuit result should not be automatically interpreted as one of those narrower categories without the full controller definition.

The range-sensor section describes digital, analog and PWM designs with different checks. A frequency criterion from a PWM implementation cannot diagnose every general electrical result, and an averaged decoded selector position may conceal an underlying signal problem.

Verify the representation before choosing a test

Record the reporting module, full suffix, range-sensor architecture and available B signal information. If intermittency is confirmed by the vehicle-specific definition, preserve the event timing. If the controller reports a more general circuit fault, use its applicable diagnostic branch rather than inventing a dropout count.

The source provides no universal B terminal, physical sensor location or replacement rule. The unresolved generic-versus-document label is retained here while the useful distinction between frequency, level, correlation and general circuit results remains supported.

Source and applicability

Ford 2024–2025 gasoline OBD operation summary, July 16 2024 revision; only the cited monitor and transmission architectures. No individual vehicle fitment or universal calibration is inferred. Ford PDF, page 147. Ford PDF, page 148.