What Is the P0805 Code?
Symptoms
Causes
Seriousness
Can I Still Drive?
Diagnose
Difficulty of Inspecting
Get Additional Help
The P0805 code definition is “Clutch Position Sensor A Circuit,” although some vehicles may only list it as “Clutch Position Sensor Circuit.” This code indicates that the clutch position sensor circuit, which monitors the status of the clutch on a manual transmission vehicle, has somehow faltered in its circuitry. This code doesn’t give any extra information, except that in some cases, this refers specifically to sensor A, which may be distinct from other clutch position sensors in your vehicle. As a generic powertrain code, this code applies to many OBD-II vehicles with a manual transmission.
More About the P0805 Code
In a manual transmission vehicle, the powertrain control module (PCM) or transmission control module (TCM) needs to understand whether the clutch is engaged or not to allow the transmission to switch gears safely. The vehicle will read an output voltage of the clutch position sensor, usually an on/off switch near the clutch foot pedal, determining whether or not the clutch is engaged, and then transmit that voltage to the PCM or TCM, which will make choices depending on the information. If one of these components detects an improper voltage or resistance issue in the clutch position sensor circuit, you’ll see code P0805 stored.
Who Has the Lowest Price?
Some service centers will give you an online estimate to compare. Why drive around Town!?
What Are the Symptoms of a P0805 Code?
The symptoms of the P0805 code can sometimes vary, depending on the severity of the problem you’re experiencing. You will almost always notice the check engine light illuminated, as well as sometimes other malfunction indicator lamps like your transmission warning lamp. However, if the vehicle starts with the clutch disengaged, this is a severe safety issue. This means that in some vehicles, the motor will not start, or you may need to manually engage the clutch before starting the vehicle.
What Are Some Causes of a P0805 Code?
There are many possible causes of the P0805 code, and it’s important to note the various concerns related to this diagnostic trouble code. This error code doesn’t actually identify a core problem but instead just references a symptom that can arise from many different problems. Here are a few of the possible causes that you can see due to the P0805 code:
- Defective clutch position sensor switch
- Physical damage to the sensor switch or other related areas
- Defective starter solenoid
- Defective fuse or fuse-able link
- Damaged or faulty wiring, including loose connections and wiring connectors
- PCM or TCM failure, although this is very uncommon
How Serious Is the P0805 Code?
You should treat the P0805 code as being quite serious. Even if the vehicle isn’t starting with a disengaged clutch, this code can result in concerns surrounding your vehicle’s ability to shift gears effectively. A faulty clutch position sensor can cause the vehicle to avoid shifting when desired, which can be frustrating and cause reduced fuel efficiency. It’s always best to bring your vehicle back to normal readings as quickly as possible, even for a basic circuit issue.
Can I Still Drive with a P0805 Code?
It depends heavily on what the actual problem is. Because this generic code only looks at the circuit rather than the core concern, the P0805 code could completely cut off your ability to drive, or it could be fairly non-impactful. However, even if you don’t see any major drivability concerns, experts will still recommend that you get help with this code as soon as possible and avoid driving with it. The problem could deteriorate quite quickly, so fixing the problem will prevent any unforeseen issues.
How Easy Is It to Diagnose a P0805 Code?
The P0805 code can be quite difficult to diagnose. This code doesn’t give you any insight into the actual problem causing the P0805 code, but instead just lets you know that there’s an issue with the position sensor circuit. To diagnose the core issue, you’ll likely need to handle repair processes like continuity testing, testing battery voltage, checking electrical connectors, and going through other diagnostic steps. All in all, these are advanced steps, and auto repair shops will be more well-equipped to handle this generic code than a DIYer likely will.
How Difficult Is It to Inspect a P0805 Code?
It’s common for the P0805 code to be fairly difficult to inspect. This is partially because, as with all circuit codes, you need to make sure you’re safe. You’ll need to check things like the power source, ground wires, loose connectors, and potentially faulty wiring to ensure you understand the problem. A DIYer can make many common mistakes when investigating this fault code, which is why it’s generally a good idea to talk to an expert about it.
Need Additional Help with Your P0805 Code?
Many people end up needing help with the P0805 code. It’s a difficult code to diagnose and inspect, so it’s common for people to get expert assistance with this specific code. If you’re looking for someone to help you with your P0805 code, there are definitely plenty of options out there.
To start with, look for an auto repair shop in your area. There are lots of local auto repair shops that will be more than happy to help you solve this problem without having to go too far out of your way.
It’s also a good idea to check out the OBD-II database at KBB.com, especially if you think there are multiple problems with your vehicle. This database can give you more insight into other codes your vehicle is throwing so you can bring it to a repair shop with more knowledge of its potential issues.
P0805 Q&A
Common Error Codes
Browse All OBD-II Codes
Get Recall Alerts
All recalls are considered serious. Stay safe. Take care of any recalls ASAP. The good news? Recall repairs are free when performed at a local dealer.