Definition of Fault Code P0930
A fault code P0930 is related to a vehicle’s automatic transmission and its shift lock solenoid, which prevents the gear lever from being moved out of park without the brake pedal being pressed.
What Does Code P0930 Mean?
P0930 is a generic OBD-II powertrain code for a low voltage issue with the shift lock solenoid, indicating that the Powertrain Control Module (PCM) does not believe the brake pedal is pressed. The shift lock solenoid works in conjunction with the brake light switch.
What Causes Code P0930?
A P0930 rarely has more than one cause, but others include:
- Faulty shift lock solenoid
- Faulty brake light switch
- Low battery voltage
What Are the Symptoms of Code P0930?
Simply put, your gear lever will not be able to shift out of park. Most modern automatic transmissions have a built-in override that is accessible via a screwdriver.
How Does a Mechanic Diagnose Code P0930?
First, your mechanic will bypass the shift solenoid through an access panel usually located near the gear lever itself. If this works, the solenoid will be tested for continuity and then replaced.
Common Mistakes When Diagnosing Code P0930
Although rare, low battery voltage can cause a shift solenoid to fail.
How Severe Is Code P0930?
Not being able to shift out of park essentially immobilizes a vehicle, so you can consider a P0930 as serious. However, it does not cause severe damage to a vehicle.
What Repairs Can Fix Code P0930?
- The most common repairs for a P0930 are as follows:
- Replacement of the shift lock solenoid
- Replacement of the brake pedal switch