Easy one-page printout for the garage or repair shop
This summary uses the existing diagnostic information shown in full below.
This code means that the car's computer is getting a weak signal from the sensor that tells it how fast the car's wheels are turning.
The output shaft speed sensor measures the rotational speed of the transmission's output shaft and sends this information to the vehicle's computer.
The P1813 code is triggered when the powertrain control module (PCM) detects a low voltage or weak signal from the output shaft speed sensor. This sensor is responsible for providing the PCM with data on the speed of the transmission's output shaft, which is crucial for proper transmission operation and shift timing.
• Check Engine Light is on
• Erratic or harsh shifting
• Transmission stuck in one gear
• Faulty output shaft speed sensor
• Damaged or corroded wiring or connectors
• Malfunctioning PCM
PCM: Powertrain Control Module
OBD-II: On-Board Diagnostics, second generation
• Inspect the output shaft speed sensor and its wiring for damage.
• Use a multimeter to check the sensor's voltage and resistance.
• Test the PCM for faults if the sensor and wiring are in good condition.
• Replace the output shaft speed sensor if faulty.
• Repair or replace damaged wiring or connectors.
• Reprogram or replace the PCM if necessary.
• OBD-II scanner
• Multimeter
• Basic hand tools
$150 - $400
Moderate
• Ford F-150
• Chevrolet Silverado
• Toyota Camry
• Regularly inspect and maintain sensor connections.
• Keep the transmission fluid clean and at proper levels.
• Perform regular vehicle diagnostics.
Sensor Issue
• Avoid driving the vehicle until repaired to prevent further damage.
• Consult a professional mechanic for accurate diagnosis.
Check with your vehicle manufacturer for warranty coverage on sensors and PCM.
This code has been commonly associated with sensor failures in older vehicles with high mileage.
Moderate – Addressing this issue promptly can prevent transmission damage.
Driving with this code active can lead to unsafe driving conditions due to transmission issues.
• Vehicle at operating temperature
• Transmission in drive
The output shaft speed sensor is typically located on the transmission near the output shaft.
Q: Can I drive with a P1813 code?
A: It's not recommended to drive with this code active, as it can lead to transmission damage and unsafe driving conditions.
Q: How can I reset the P1813 code?
A: After repairs, the code can be cleared using an OBD-II scanner. However, if the issue isn't fixed, the code will return.
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