P0773

Code

LAND ROVER P — Powertrain

Shift Solenoid E Electrical

Brand: LAND ROVER

Type: P — Powertrain

Views: UK: 27 EN: 41 RU: 42

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Page language: EN

Causes

Failed shift solenoid E (stuck or open coil)
Open or short in solenoid wiring harness
Corroded or loose connector/pins at solenoid or TCM
Blown fuse or faulty transmission relay/power feed
Poor battery/ground connection affecting circuit voltage
Faulty TCM or internal driver transistor

Symptoms

Check Engine / transmission warning lamp illuminated
Transmission may be stuck in limp/torque‑converter lockup mode
Delayed, harsh, or erratic shifting in some gears
Transmission may default to a single gear (limp home)
Stored freeze‑frame and related transmission DTCs

What to check

Retrieve all stored codes and freeze‑frame data from the vehicle
Inspect transmission fluid level and condition (color, smell, contamination)
Visual inspection of wiring harness and connectors for damage, corrosion, or loose terminals
Check fuses and relays related to transmission power and control
Back‑probe solenoid connector and monitor voltage/ground while cycling TCM commands
Measure coil resistance of Shift Solenoid E with connector disconnected

Signal parameters

Coil resistance: typically low (single to tens of ohms) — compare to service spec
Apply voltage: when commanded ON the solenoid should see near battery voltage through the driver or a switched ground depending on design
When OFF the solenoid circuit should be open/near 0 current
TCM may use PWM to modulate solenoid — watch for duty‑cycle changes when commanded
Current draw increases when solenoid is energized (measure with clamp meter or by voltage drop technique)

Diagnostic algorithm

Read and record all DTCs and freeze‑frame data. Note driving conditions when code set.
Visually inspect transmission fluid level/condition. If fluid is burnt or contaminated, address fluid/ filter service before electrical replacement.
Visually inspect connector at Shift Solenoid E and the harness to the TCM for chafing, corrosion, pin damage or water ingress. Repair any damage.
With ignition OFF, disconnect solenoid connector. Measure coil resistance between solenoid terminals and compare to spec or to same‑vehicle reference. Replace solenoid if open or out of range.
With harness connected, back‑probe the solenoid connector. Command the solenoid ON with a scan tool and observe voltage/ground and change in current. Look for intermittent signals while flexing harness.
If no proper control signal from TCM, trace wiring to TCM, check power and ground circuits, and check related fuses/relays.
If wiring and connector are good but the TCM does not command correctly, test/replace TCM per manufacturer's procedure.
If electrical tests pass but shifting is still incorrect, inspect valve body and solenoid assembly for hydraulic faults and consider valve body/solenoid replacement.
After repair, clear codes, perform functional test/road test and re‑scan to confirm the issue is resolved and code does not return.

Likely causes

Wiring connector corrosion or pin damage at the solenoid
Solenoid coil failed (open or intermittent)
Damaged harness where it flexes or rubs
Low/dirty transmission fluid affecting solenoid operation
Faulty TCM driver (less common)

Fault status

⚠️ Status

MIL illuminated. DTC P0773 stored for Shift Solenoid E Electrical — indicates circuit fault (open/short/high resistance/intermittent) or solenoid/TCM/valve body issue.

🟡 Repair difficulty: Medium

⏱️ Diagnostic time: 1.0-3.0 hours

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