P0720 Subaru Code - Output Speed Sensor Circuit
Quick Answer
The speed sensor detects the revolution of the idler gear parking pawl lock gear and emits a pulse signal. Common causes include Faulty Speed Sensor, Speed Sensor harness is open or shorted, Speed Sensor circuit poor electrical connection. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
- What it means
- P0720 Subaru indicates Output Speed Sensor Circuit.
- Common causes
- Common causes include Faulty Speed Sensor, Speed Sensor harness is open or shorted, Speed Sensor circuit poor electrical connection.
- Severity
- High - diagnose this code as soon as possible.
- Can I drive?
- Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
Code P0720 Subaru Description
What are the Possible Causes of the DTC P0720 Subaru?
- Faulty Speed Sensor
- Speed Sensor harness is open or shorted
- Speed Sensor circuit poor electrical connection
How to Fix the DTC P0720 Subaru?
Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P0720 Subaru code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.
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Frequently Asked Questions about P0720 Subaru Code
What does the OBDII code P0720 mean on a Subaru?
P0720 refers to an issue with the output speed sensor circuit, which monitors the transmission's output speed and helps the vehicle control shifting and other transmission functions.
What are the symptoms of the P0720 code in a Subaru?
Common symptoms include erratic or delayed shifting, poor acceleration, loss of cruise control functionality, and the Check Engine Light turning on.
What causes the P0720 code in a Subaru?
Possible causes include a faulty output speed sensor, damaged wiring or connectors in the sensor circuit, issues with the transmission control module (TCM), or a failing transmission.
How can I diagnose the P0720 code in a Subaru?
Start by scanning for codes with an OBDII scanner, inspecting the output speed sensor and its wiring for damage, and testing the sensor for proper voltage and signal output.
Can a bad output speed sensor cause transmission problems in a Subaru?
Yes, a faulty output speed sensor can disrupt transmission operation, leading to shifting problems and reduced performance.
Is it safe to drive a Subaru with the P0720 code?
Driving with this code can lead to worsening transmission issues, so it's best to address it promptly to avoid further damage.
How do I fix the P0720 code in a Subaru?
Repairs may involve replacing the output speed sensor, repairing damaged wiring or connectors, or diagnosing and fixing issues with the TCM.
Where is the output speed sensor located in a Subaru?
The output speed sensor is typically mounted on the transmission housing, near the output shaft.
How much does it cost to fix the P0720 code in a Subaru?
Costs can vary depending on the issue, but replacing the output speed sensor generally costs $100-$300, including parts and labor.
Can a dirty transmission fluid cause the P0720 code in a Subaru?
While it's not a direct cause, dirty or contaminated transmission fluid can affect transmission performance and potentially contribute to sensor-related issues.
Discuss the causes and fixes for P0720 Subaru OBDII Code
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