P092F

Code

Generic P — Powertrain

Transmission Oil Pressure Sensor Circuit Intermittent

Brand: Generic

Type: P — Powertrain

Views: UK: 8 EN: 11 RU: 4

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Page language: EN

Causes

Intermittent open or short in sensor wiring
Corroded or loose connector at sensor or PCM/TCM
Faulty transmission oil pressure sensor
Intermittent PCM/TCM input failure
Water intrusion or physical damage to harness
Poor or intermittent ground or reference voltage

Symptoms

Check Engine Light (MIL) illuminated, intermittent
Transmission may enter limp mode or default shift strategy intermittently
Erratic or harsh shifting under some conditions
Delayed or incorrect gear engagement
Fault may clear temporarily and then return

What to check

Read freeze frame and freeze-frame data and note conditions when fault set (gear, rpm, temp, vehicle speed).
Scan for other related codes (transmission and powertrain) that may indicate broader issues.
Visual inspection of sensor, connector, and wiring for damage, corrosion, pin push-out, or fluid contamination.
Backprobe sensor connector and monitor live data while key ON/engine running; watch for intermittent voltage dropouts.
Wiggle test: move harness and connector while monitoring live data to reproduce the fault.
Verify reference voltage (typically 5V) and ground at the sensor connector with key ON.

Signal parameters

Sensor type: analog pressure sensor (voltage output) on most vehicles
Typical output: ~0.5 V at low/no pressure up to ~4.5 V at high pressure (varies by vehicle)
Reference supply: usually 5 V from PCM/TCM (verify OEM spec)
Ground: sensor ground shared with PCM/TCM ground (verify continuity)
Intermittent symptom: sudden voltage dropouts, spikes, or the signal freezing at a fixed value

Diagnostic algorithm

Retrieve DTCs and freeze-frame data with a scan tool. Note operating conditions when P092F set.
Clear the code and attempt to reproduce. If intermittent, try road test under similar conditions.
Perform a careful visual inspection of the transmission pressure sensor, connector, and wiring. Look for chafing, heat damage, oil intrusion, or loose pins.
Backprobe the sensor connector. With key ON (engine OFF) confirm reference voltage (≈5V) and ground presence. Record resting sensor voltage.
Start engine and monitor live sensor voltage across idle and higher RPM/gear changes. Look for drops/interruptions in the signal.
While monitoring, perform a wiggle test on the harness and connector to try to reproduce the intermittent fault. If the code or signal anomaly appears, isolate the harness area being moved.
Check continuity and resistance between the sensor signal, reference and ground wires and the PCM/TCM connector with harness disconnected. Repair any opens or high-resistance connections.
If wiring and connectors test good, swap with a known-good sensor (if available) or install a replacement sensor to verify. Re-test for code recurrence.
If faults persist after replacing sensor and repairing wiring, test PCM/TCM inputs and grounds per OEM procedures; consider module repair or replacement only after confirming harness/sensor are good.
After repairs, clear codes and perform a final drive cycle and scan verification to ensure the intermittent condition is resolved.

Likely causes

Damaged/chafed wiring harness to pressure sensor causing intermittent contact
Corroded connector pins at sensor or module producing intermittent connection
Faulty pressure sensor that develops intermittent internal fault
Intermittent 5V reference or ground from PCM/TCM
Intermittent short to battery or to ground when harness moves
Aftermarket wiring or recent repairs disturbed the circuit

Fault status

⚠️ Status

Intermittent fault detected on the transmission oil pressure sensor circuit. Signal voltage is intermittently incorrect or lost; ECM/TCM logged P092F when inconsistency exceeded diagnostic thresholds.

🟡 Repair difficulty: Medium

⏱️ Diagnostic time: 1.0-2.5 hours