P2E00

Code

Generic P — Powertrain

Gear Lever Position Sensor A Circuit

Brand: Generic

Type: P — Powertrain

Views: UK: 24 EN: 44 RU: 27

AI status

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Page language: EN

Causes

Open or shorted wiring between sensor and control module
Corroded, loose or contaminated connector at the sensor or ECU
Failed gear lever position (range) sensor (internal fault)
Incorrect reference or ground to the sensor (poor ground)
Water intrusion or physical damage to the sensor or harness
Faulty transmission control module / PCM (less common)

Symptoms

MIL / Check Engine light illuminated
Gear position readout incorrect or blank on dash
Vehicle may not start or only start in certain selector positions
Transmission in limp/limited gear mode or improper shifting
Intermittent inability to select gears, or transmission stuck in neutral
Cruise control or starter interlock may be disabled

What to check

Read and record DTCs and freeze frame data with a scan tool; check for related transmission/starting codes
Verify battery voltage is stable (low voltage can cause false faults)
Visually inspect sensor, wiring and connectors for damage, corrosion, or water intrusion
Wiggle test harness and connector while monitoring live data for intermittent changes
Backprobe sensor connector to measure reference voltage, signal voltage and ground
Check continuity and resistance of wires between sensor and PCM; check for shorts to battery or ground

Signal parameters

Reference voltage commonly 5.0 V (may vary by manufacturer); verify at harness connector
Typical analog signal range for potentiometer type: approximately 0.5 V to 4.5 V across gear positions (varies by design)
Some designs use switched contacts for park/neutral positions (0 V or battery voltage when closed); others use discrete voltage steps
Expected smooth, monotonic change in signal as lever is moved through positions; no sudden drops or noise
Sensor resistance (potentiometer types) should change smoothly with lever movement — compare to spec

Diagnostic algorithm

Retrieve and record the DTC(s) and freeze frame. Note when the fault occurred and related conditions (engine off/on, gear selected).
Verify vehicle battery voltage is within normal range (12.4–12.8 V at rest). Low voltage can cause faults—retest after charging if low.
Perform a visual inspection of the sensor, connector and harness for damage, corrosion, moisture or pinched wires.
Backprobe the sensor connector. With ignition ON (engine off unless specified), measure reference voltage, signal voltage and ground reference. Compare to expected ranges.
Observe live data while moving the gear lever through all positions: signal should change smoothly and correspond to each position. Wiggle the harness and connector to check for intermittent faults.
Check continuity and resistance between the sensor connector and the transmission/engine control module connectors. Check for shorts to battery and ground.
If the sensor is a switch-type (park/neutral contacts), verify contact continuity in the expected positions with a multimeter.
If wiring and connectors are good but signal is out of specification or inconsistent, replace the gear lever position sensor. Use OEM or equivalent part and ensure correct adjustment/installation.
After repair, clear codes, perform a relearn or calibration procedure if required by manufacturer, then road test and re-scan to confirm the fault does not return.
If problem persists after replacing sensor and repairing wiring, test/replace the transmission control module/PCM as a last step (verify proper diagnosis first).

Likely causes

Damaged/loose connector at the sensor
Open or short in the sensor harness (chafing, pinched wire)
Failed sensor (potentiometer or switch inside the sensor)
Corroded connector causing intermittent signal

Fault status

⚠️ Status

Gear Lever Position Sensor A Circuit — electrical fault detected. Possible open, short to power/ground, intermittent connection, out‑of‑range signal, or sensor failure. Inspect wiring/connector and verify sensor output.

🟡 Repair difficulty: Medium

⏱️ Diagnostic time: 0.5-2.0 hours