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DTC codes / P2Exx · Hybrid propulsion / P2E16

P2E16Intermediate Shaft Selection Actuator Position Sensor Range/Performance

P2E16 indicates that the powertrain control module (PCM) has detected an out-of-range or erratic signal from the intermediate shaft selection actuator position sensor, which monitors the position of the intermediate shaft selection mechanism in the transmission or transfer case. The PCM compares the sensor voltage against expected values for the commanded gear or mode and sets this code when the signal falls outside the valid range or fails a rationality check.

SystemPowertrain
Code typeGeneric (all makes)
SeverityMedium
Fix difficultyProfessional
AreaHybrid propulsion

Symptoms you may notice

  • Illumination of the check engine light or service transmission message
  • Harsh or delayed engagement when shifting between gears or drive modes
  • Transmission stuck in a single gear or failing to select the commanded range
  • Inability to engage four-wheel drive or low range on vehicles with a transfer case
  • Intermittent operation where the fault appears only under certain temperatures or vibrations
  • Often no symptoms besides the warning light, especially if the fault is intermittent

Common causes, most likely first

  1. Faulty intermediate shaft selection actuator position sensor
  2. Damaged or corroded wiring harness or connector at the sensor or actuator
  3. Mechanical binding or wear in the intermediate shaft selection mechanism
  4. Low or contaminated transmission fluid affecting actuator performance
  5. Failed actuator motor or solenoid that moves the selection mechanism
  6. PCM software calibration issue or internal PCM fault

How to diagnose and fix it

  1. Scan all modules for stored and pending codes and record freeze-frame data to understand when the fault occurs
  2. Visually inspect the sensor, actuator, and wiring for damage, corrosion, or loose connections
  3. Measure sensor reference voltage and signal voltage with a multimeter and compare to manufacturer specifications
  4. Check transmission fluid level and condition, and service if contaminated or low
  5. Perform a bidirectional actuator test with a scan tool to command the selection mechanism through its range and observe sensor response
  6. Replace the position sensor if resistance or voltage checks are out of specification
  7. If the sensor and wiring are good, inspect the actuator and mechanical linkage for binding or wear, and repair or replace as needed

Before you replace the position sensor

  • A binding intermediate shaft mechanism can mimic a failed sensor by forcing the actuator to draw excess current and report implausible positions, so always verify free movement before condemning the sensor.
  • Corroded pins in the connector at the actuator are a frequent cause of intermittent range/performance codes, especially on vehicles exposed to road salt or water crossings.
  • The code can set from a low fluid level that prevents the actuator from reaching the commanded position, so a fluid check is a cheap first step that is often overlooked.
  • After replacing the sensor or actuator, a relearn or calibration procedure may be required with a scan tool; skipping it can leave the code active even with good parts.
  • Related codes for the actuator circuit (open, short, or performance) may also be present, and diagnosing them together prevents misreading this code as a standalone sensor failure.

Can I keep driving with P2E16?

You can usually drive the vehicle to a repair shop, but avoid aggressive acceleration, towing, or off-road use until the fault is repaired because the transmission or transfer case may not select the commanded range reliably. If the vehicle enters limp mode or refuses to engage a gear, stop driving and arrange a tow.

Tools that help

Tools we recommend are in the Auto Veteran shop on Amazon. As an Amazon Associate we earn from qualifying purchases.

Guidance is general and written for all OBD-II vehicles. Exact tests and values vary by model, so confirm the fault before replacing parts.

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