P0720 Subaru Code - Output Speed Sensor Circuit
Quick Answer
The P0720 diagnostic trouble code (DTC) for Subaru vehicles refers to a potential issue with the output speed sensor circuit. Common causes include Faulty output speed sensor, Damaged wiring or connectors in the sensor circuit, ECM/TCM communication issues. 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 output speed sensor, Damaged wiring or connectors in the sensor circuit, ECM/TCM communication issues.
- 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.
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Code P0720 Subaru Description
The P0720 diagnostic trouble code (DTC) for Subaru vehicles refers to a potential issue with the output speed sensor circuit. The output speed sensor is a crucial component of the vehicle's transmission system, responsible for monitoring the speed of the output shaft and providing this information to the engine control module (ECM) or transmission control module (TCM). This data is essential for the proper operation of the transmission, as it helps the vehicle shift gears smoothly and efficiently.
Common Causes of P0720 Subaru
- Faulty output speed sensor
- Damaged wiring or connectors in the sensor circuit
- ECM/TCM communication issues
- Transmission fluid contamination or low fluid levels
- Internal transmission problems
Symptoms of P0720 Subaru
- Rough or delayed shifting
- Erratic speedometer readings
- Transmission slippage
- Limp mode activation
- Illumination of the check engine light
How to Fix P0720 Subaru
- Begin by performing a thorough diagnostic scan to confirm the P0720 code and pinpoint the exact cause of the issue.
- Inspect the output speed sensor, wiring harnesses, and connectors for any visible damage or wear. Replace any faulty components.
- Check the transmission fluid level and condition. Top off or replace the fluid if necessary.
- Test the ECM/TCM communication to ensure they are functioning correctly. Repair or replace as needed.
- Clear the DTC and test drive the vehicle to verify that the issue has been resolved.
Cost to Fix P0720 Subaru
The cost of repairing a P0720 code on a Subaru vehicle can vary depending on the specific cause of the issue and the labor rates in your area. On average, you can expect to pay anywhere from $150 to $400 for parts and labor. Keep in mind that diagnostic time and labor rates at auto repair shops can fluctuate, so it's advisable to get a few quotes from different shops to ensure you're getting a fair price.
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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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