What Does P0930 Mean?
The TCM or PCM has detected a lower-than-expected voltage on the gear shift lock solenoid/actuator control circuit A. Circuit A is the primary shift lock control, and a low voltage condition means the solenoid is not receiving adequate voltage to operate. This can be caused by a short to ground in the wiring or a partially shorted solenoid coil, preventing normal shift lock operation.
Common Causes
30%
Short to ground in circuit A wiring between the control module and shift lock solenoid
25%
Corroded or water-damaged connector at the shift lock solenoid or control module
20%
Shift lock solenoid A with partially shorted internal coil
15%
Wiring insulation damaged by heat, chafing, or chemical exposure in the console area
10%
Control module ground-side driver malfunction pulling the circuit low
Diagnostic Steps
1
Disconnect the shift lock solenoid A and measure circuit A voltage at the harness connector; if voltage rises to normal, the solenoid is internally shorted.
2
With the solenoid disconnected, check for shorts to ground on the circuit A wire using a multimeter set to continuity/resistance mode.
3
Inspect the console wiring for liquid damage, crushed wires, or insulation worn through by contact with shifter mechanism components.
4
Measure the shift lock solenoid A coil resistance; compare to specification. Values well below specification indicate shorted windings.
5
If wiring and solenoid are not the cause, monitor the control module output signal to determine if the module itself is driving the circuit low.
Estimated Repair Cost
$150 - $500
Parts + labor, varies by vehicle and location
The TCM or PCM has detected a lower-than-expected voltage on the gear shift lock solenoid/actuator control circuit A. Circuit A is the primary shift lock control, and a low voltage condition means the solenoid is not receiving adequate voltage to operate. This can be caused by a short to ground in t...
The most common cause of P0930 (Gear Shift Lock Solenoid/Actuator Control Circuit "A" Low) is: Short to ground in circuit A wiring between the control module and shift lock solenoid
Typical repair costs for P0930 range from $150 to $500, depending on the vehicle, location, and whether you do it yourself or go to a shop.
A low-voltage fault on the primary shift lock circuit can prevent the park interlock from functioning correctly. The shifter may move freely from Park without the brake pedal applied, or the short may blow the fuse and lock the shifter in Park entirely.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to P0930 to identify the root cause.
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Quick Info
Category
Powertrain
System
Transmission
Difficulty
Type
Generic (SAE)
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