Skip the auto shop - Our mechanics make house calls
  1. Home
  2. Articles
  3. P0927 OBD-II Trouble Code: Gear Shift Reverse Actuator Circuit High

P0927 OBD-II Trouble Code: Gear Shift Reverse Actuator Circuit High

check engine light

The P0927 fault code indicates the Engine Control Module (ECM) detected a problem in the operation of the gear shift reverse actuator of the transmission. The gear shift reverse actuator controls how a vehicle’s transmission shifts into reverse gear.

What the P0927 code means

Put in the simplest of terms, the P0927 OBD-II trouble code means the ECM found a signal indicating the voltage within the gear shift reverse actuator was higher than normal parameters.

This voltage anomaly may be caused by improper function of the guide rail or shift shaft corresponding to reverse gear within the transmission, making it difficult or impossible to shift into reverse gear.

What causes the P0927 code?

While there are several issues that can trigger a higher than normal reading within the gear shift reverse actuator circuit, resulting in the illumination of the Check Engine Light on a vehicle’s dashboard, the cause of the code is likely due to a mechanical problem within the transmission.

What are the symptoms of the P0927 code?*

When the P0927 code causes the Check Engine Light to come on, the following symptoms may be present:

How does a mechanic diagnose the P0927 code?

A certified technician must first verify the existence of the P0927 code with a specialized scan tool before moving further. Multiple scans may be necessary to ascertain if the problem is intermittent or constant along with other tests, including a visual inspection.

Common mistakes when diagnosing the P0927 code

After the P0927 code registers, a technician may make the following mistake(s):

  • Not verifying the voltage running through the gear shift reverse actuator is high
  • Failure to visually inspect the transmission, especially components relating to reverse gear
  • Forgetting to clear the P0927 OBD-II fault code after the issue is resolved

How serious is the P0927 code?

A vehicle registering the P0927 code can still run, although it may not be able to shift into reverse gear easily or at all. Over time, this issue can affect the function of other parts and systems, so it is advisable to promptly contact a qualified mechanic for assistance in diagnosing and repairing the root cause of the P0927 code registering.

What repairs can fix the P0927 code?

After a qualified mechanic uses a specialized scan tool to verify the existence of the P0927 code, the vehicle may need the following repair(s):

  • Adjusting the guide rail or shift shaft corresponding to reverse gear
  • Replacing the transmission as a whole
  • Replacing the ECM in rare cases

Additional comments for consideration regarding the P0927 code

Any time an OBD-II trouble code, such as P0927, is detected, prompt attention is advisable.

Neglecting to diagnose and repair the root cause of the trouble code can make the situation worse, which necessitates greater costs and hassle down the road.

It can also take up to several hours to diagnose the cause of the P0927 code. Multiple scans may be needed along with other tests to ensure and repairs or parts replacements have effectively resolved the issue.

Need help with a P0927 code?

YourMechanic can put you in touch with a mobile mechanic who can come to your home or office to diagnose the cause of the P0927 OBD-II trouble code and fix the issue. Get a quote and book an appointment online or talk to a service representative at 1-800-701-6230.

The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
Icon-warranty_badge-02

Skip the repair shop, our top-rated mechanics come to you.

At your home or office

Choose from 600+ repair, maintenance & diagnostic services. Our top-rated mechanics bring all parts & tools to your location.

Fair & transparent pricing

See labor & parts costs upfront, so you can book with confidence.

12-month, 12,000-mile warranty

Our services are backed by a 12-month, 12,000-mile warranty for your peace of mind.

Get A Quote

Need Help With Your Car?

Our certified mobile mechanics make house calls in over 2,000 U.S. cities. Fast, free online quotes for your car repair.

GET A QUOTE

More related articles

How Long Does a Heater Control Valve Last?
Keeping the right amount of coolant in a car is essential in keeping the engine at the right temperature. Failing to have the right amount of coolant or even bad elements...
How Long Does a Throttle Return Spring Last?
Not all vehicles on the road feature an electronic throttle control (ETC), which is also called drive-by-wire. For vehicles that don't offer this system, they have a throttle cable instead that...
P0240 OBD-II Trouble Code: Turbocharger Boost Sensor B Circuit Range/Performance
P0240 code definition Turbocharger Boost Sensor B Circuit Range/Performance What the P0240 code means P0240 is an OBD-II generic code triggered when the Engine Control Module (ECM) detects the intake boost...


Related questions

Q: Stalls out when I put in drive p1729

Given your mileage, it is likely the throttle body and idle air controller need cleaning. It is also possible the throttle position sensor (which communicates with the transmission) may also be failing. This would seem more likely since your replacement...

Q: OBD support

Hey there. If you have the OBD-2 connector under the dash directly under the steering column, then the ELM327 will work to scan the vehicle after you download the app. I can tell you that this adapter is very cheaply...

Q: Have an array of warning codes after brake job.

As you may know, your car is equipped with wheel speed sensors at each of the four wheels which monitor wheel speed while relaying this information constantly to the ABS and traction control system which are controlled by the car's...