P1716

Code

LAND ROVER P — Powertrain

Inductive signature solenoid malfunction C

Brand: LAND ROVER

Type: P — Powertrain

Views: UK: 13 EN: 30 RU: 19

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Page language: EN

Causes

Open or shorted wiring to solenoid C
Corroded or loose connector or terminal at solenoid or TCM
Failed solenoid coil (internal short/open)
Contaminated or damaged valve body affecting solenoid movement
Faulty TCM/ECU driver or ground
Intermittent circuit (chafed wire, broken strand)

Symptoms

Malfunction Indicator Lamp (MIL) or warning lamp illuminated
Harsh, delayed, or erratic shifting
Transmission may default to limp/limitation mode (reduced gears)
Stored transmission fault codes
Possible inability to shift into some gears or loss of drive

What to check

Retrieve freeze frame and related transmission codes; note conditions when fault set
Visual inspection of wiring harness and connector for solenoid C — look for corrosion, damage, pin push-out
Check battery and charging voltage; low voltage can cause false faults
Back-probe connector and verify connector is seated and terminals are good
Measure solenoid coil resistance at the harness and at the solenoid (with connector disconnected)
Scan live data for solenoid command and feedback/signature where available

Signal parameters

Nominal coil resistance (typical): approximately 10–30 Ω (varies by model — consult OEM specifications)
Operating voltage: approximately 12 V nominal (system voltage) while powered; solenoids typically switched by TCM via ground or PWM
PWM control: when commanded ON the TCM may apply a pulsed duty cycle; frequency commonly tens to a few hundred Hz (varies by model)
Expected response: when commanded, inductive signature / feedback signal should change consistently and match the commanded state; intermittent or no change indicates fault
Voltage drop on supply/ground should be minimal under activation — large drop suggests wiring or supply issue

Diagnostic algorithm

Connect a suitable scan tool and confirm P1716 and any related transmission codes. Record freeze-frame data and symptoms.
Clear codes and attempt to re-create fault while monitoring live data (solenoid command, pressure, gear selection). Note when code returns.
Perform a careful visual inspection of the solenoid C connector, pins and harness to the TCM for damage, corrosion, or disconnection.
With ignition OFF, disconnect solenoid C connector and measure coil resistance between the solenoid terminals. Compare to OEM spec; if out of range, suspect solenoid.
Check for unintended continuity to ground or battery on the solenoid circuit (insulation fault).
With connector back on, back-probe the harness and monitor voltage/ground while commanding solenoid ON/OFF with scan tool. Verify proper switching and expected voltage waveform or duty cycle.
Wiggle harness and connectors while commanding the solenoid to look for intermittent changes in operation or resistance.
If coil resistance and switching are correct at the harness but solenoid does not actuate or signature is wrong, remove valve body/solenoid pack for inspection. Check for contamination, stuck spool, or mechanical binding.
If valve body and solenoid appear good and wiring/grounds are verified, suspect TCM driver fault — verify TCM connections and grounds. Consider TCM bench testing or replacement only after other causes eliminated.
After repair, clear codes and road test under the same conditions to confirm the fault does not return.

Likely causes

Damaged wiring harness or poor connector/terminal at solenoid C
Failed solenoid coil
Contaminated valve body or stuck spool preventing proper inductive signature
Faulty TCM driver (less common)

Fault status

⚠️ Status

P1716 Inductive signature solenoid malfunction C

🟡 Repair difficulty: Medium

⏱️ Diagnostic time: 1.5-3 hours

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Repair manuals

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P1716 — Inductive signature solenoid malfunction C