P0727 on Ford
Engine Speed Input Circuit No Signal
P0727 on Ford vehicles indicates engine speed input circuit no signal. Au7o has documented this code across 1 Ford model — most commonly on Maverick. This code indicates the transmission computer is not receiving an engine speed (RPM) signal that it needs to manage shifting and torque converter operation. The TCM compares engine speed against transmission input/output speeds to control shift timing and converter lockup. A missing signal can cause erratic shifting, harsh engagement, or the transmission entering a fail-safe limp mode. Typical repair costs on Ford range from $150 to $6,500, depending on the specific model and root cause.
Common Causes of P0727
- •Faulty engine speed/crankshaft position sensor
- •Open or shorted wiring in the speed signal circuit
- •Corroded or loose connectors
- •Loss of signal communication between PCM and TCM
- •Damaged reluctor/tone ring
- •TCM or PCM internal fault
P0727 on Ford by Model
Ford Maverick(1 issue)
- 8F35 Transmission Shudder/Buck/Jerk Below 35 mph and Output Carrier Bearing Wear (Early 2022 Builds)2022
The 2.0L EcoBoost Maverick uses the same 8F35 eight-speed transmission found in other Ford applications (Edge, Nautilus, Transit Connect, Escape), where vehicles equipped with the 8F35 transmission may exhibit a shudder/buck/jerk while driving up to 35 mph (57 km/h) due to software in the powertrain control module (PCM) — this is documented in TSB 21-2389 for the Edge/Nautilus and is widely reported by Maverick owners as carry-over behavior. A separate but related condition involves transmission slipping concerns, harsh engagements and various clutch DTCs (sometimes with torque converter clutch DTCs), caused by worn needle bearings in the output planet carrier assembly (TSB 22-2281). Per the TSB, only 8F35 units built on or before Dec. 20, 2021 are flagged — which in practice means early 2022 model year Mavericks. Drivers typically feel a low-speed shudder under light throttle, harsh 2-3 upshifts on hills, or a flare on the 4-5 shift.
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What does P0727 mean on Ford?▼
P0727 stands for "Engine Speed Input Circuit No Signal." This code indicates the transmission computer is not receiving an engine speed (RPM) signal that it needs to manage shifting and torque converter operation. The TCM compares engine speed against transmission input/output speeds to control shift timing and converter lockup. A missing signal can cause erratic shifting, harsh engagement, or the transmission entering a fail-safe limp mode. On Ford specifically, this code is documented across 1 model.
What causes P0727 on Ford vehicles?▼
Common causes on Ford: Faulty engine speed/crankshaft position sensor, Open or shorted wiring in the speed signal circuit, Corroded or loose connectors, Loss of signal communication between PCM and TCM, Damaged reluctor/tone ring. Specific causes vary by model and year — see the per-model sections below.
How much does it cost to fix P0727 on a Ford?▼
Repair costs on Ford range from $150 to $6,500, depending on the specific model and root cause.
Which Ford models have P0727 documented?▼
Au7o has documented P0727 on 1 Ford model: Maverick.