P0807 Clutch Position Sensor Circuit Low Malfunction

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Cost of diagnosing the P0807 code

P0807 is a diagnostic trouble code (DTC) for "Clutch Position Sensor Circuit Low Malfunction". This can happen for multiple reasons and a mechanic needs to diagnose the specific cause for this code to be triggered in your situation. Our certified mobile mechanics can come to your home or office to perform the Check Engine Light diagnostic. Once we are able to diagnose the problem, you will be provided with an upfront quote for the recommended fix and receive $20.00 off as a credit towards the repair. All our repairs are backed by our 12-month / 12,000-mile warranty.

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P0807 code definition

The P0807 code appears in vehicles using manual transmissions and indicates that the powertrain control module (PCM) has found a malfunction in the clutch position sensor circuit. It can appear in automatic vehicles, meaning there is a PCM error.

What the P0807 code means

A P0807 code is the generic OBD-II code for vehicles operating with manual transmissions, and it occurs when the clutch start switch fails to close, preventing the starter from engaging.

What causes the P0807 code?

There are not a lot of reasons for the P0807 code, and they include:

  • A defective clutch position sensor
  • A clutch position sensor that is misadjusted
  • Wiring or electrical connectors that are shorted, corroded or open

What are the symptoms of the P0807 code?

The P0807 code may have no symptoms except the appearance of a check engine or service engine light on the dash. However, the vehicle may fail to start, or the engine in the manual vehicle may start without the clutch being engaged.

How does a mechanic diagnose the P0807 code?

To effectively diagnose the P0807 code, an OBD-II scanner is used. The mechanic or technician will use the freeze frame data to determine just when the code was set, and check for any other codes. They will then reset OBD-II fault codes before doing a road test that is used to gauge the issue and see if the code returns.

The technician also does a visual inspection to see if there are wiring issues or anything relating to the electronics that might cause this code. After any repairs are made, the vehicle is retested, and if the code persists, the mechanic or technician will then perform in-depth diagnostics on the circuitry.

Common mistakes when diagnosing the P0807 code

Though diagnostic errors are not common, it is possible for the technician or mechanic to wrongly identify a starter or solenoid rather than recognize that it is the clutch position sensor that is in need of replacement or repair.

How serious is the P0807 code?

The P0807 code can make it impossible to start a car, and can become a very serious issue. Though it could require several cycles before the check engine light illuminates, and it though it may not have obvious symptoms, it is a serious problem that can leave the driver without the ability to start the engine.

What repairs can fix the P0807 code?

To overcome and repair the P0807 code, the following repairs are commonly used:

  • The vehicle is tested with the scanner, and then the fault codes are reset. The mechanic then does a road test to see if the P0807 code reappears, and if so, they begin doing their in-depth diagnostics and repairs.
  • First, they will inspect all of the electrical connections relating to this sensor and circuitry. They will make repairs and replacements on any wiring, components, fuses or connections that show signs of trouble. Then they will retest the vehicle to see if the code reappears.
  • If so, they will then check the battery voltage on the input side of the sensor by using their ohm meter. If there is no voltage, it is necessary to disconnect the control modules and check the connections between clutch position sensor's fuse and input circuit. If there are repairs needed, these are done.
  • If not, the clutch is to be engaged and the voltage tested on the output side of the sensor. If there is voltage on the input but not the output, it is likely that you need to replace the sensor.
  • If there is voltage on both sides, it is likely that there could be a problem between the PCM and the switch.

Additional comments for consideration regarding the P0807 code

PCM problems are possible, but very rare. It is more likely an issue with the circuitry of the sensor.

Need help with a P0807 code?

YourMechanic offers certified mobile mechanics who will come to your home or office to diagnose and repair your vehicle. Get a quote and book an appointment online or speak to a service advisor at 1-800-701-6230.

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