P0928

Code

Generic P — Powertrain

Gear Shift Lock Solenoid/Actuator Control Circuit A/Open

Brand: Generic

Type: P — Powertrain

Views: UK: 26 EN: 133 RU: 35

AI status

Completed

ready

Completed 100%

Page language: EN

Scan for stored and pending codes; record freeze frame and related transmission/PRNDL codes
Visually inspect wiring and connectors at the shift-lock solenoid and module for corrosion, damage, or loose pins
Check fuse(s) and relay(s) for the shift-lock/PRNDL circuit
Attempt to operate the shift-lock solenoid with a scan tool or activation function (observe response)
Back-probe the solenoid connector while commanding the solenoid to check for control voltage or switched ground
Measure solenoid coil resistance with connector disconnected

Control type: typically switched ground or switched 12 V from module (vehicle-specific)
When commanded: voltage at solenoid supply pin should be near battery voltage (approx. 11–13 V) or the control pin should switch to ground depending on design
When not commanded: no ground return or no switched supply present at solenoid control pin
Typical solenoid coil resistance (vehicle-specific): commonly in the range of about 5–35 ohms — refer to OEM spec
Typical activated current draw: on the order of tenths to a couple of amps (vehicle-specific)

Verify code and note conditions (key position, engine off/on) when code set. Check for other related codes (PRNDL, TCM).
Perform a visual inspection of wiring, connectors, and components at the shift-lock solenoid and module. Repair any obvious damage.
Check relevant fuses and relays. Replace or bench-test relay if suspect.
With ignition ON, back-probe the solenoid connector. Command the solenoid ON with a scan tool while monitoring voltage and ground. Observe whether module provides expected control (voltage or switched ground).
If no control signal from module when commanded, measure continuity from the module pin to the solenoid connector pin. Repair any open in the harness.
Disconnect the solenoid and measure coil resistance. If resistance is open/OL or out of spec, replace the solenoid.
If coil and wiring to solenoid are good but module does not command, inspect module connector pins for damage and check module ground(s). Consider module driver failure.
After repairs, clear codes and verify proper operation by commanding the solenoid and confirming normal shift-lock behavior; road test if needed to confirm intermittent issues are resolved.
If wiring and solenoid check good and module appears to be the issue, follow manufacturer procedures for module testing or replacement.