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 signal that the sensor checking if the car is in neutral is too high. It's like when a light bulb is too bright because too much electricity is going through.
The P15BB code is triggered when the powertrain control module (PCM) detects a high voltage signal from the neutral position sensor circuit, indicating a potential issue with the sensor or the circuit itself.
The Neutral Position Sensor is responsible for informing the vehicle's computer about the gear position of the transmission. A 'Circuit High' error indicates that the voltage in this circuit is higher than expected, which could be due to a short circuit, faulty sensor, or wiring issues.
• Check Engine Light illuminated
• Transmission not shifting correctly
• Vehicle may not start
• Faulty neutral position sensor
• Wiring issues such as short circuits or open circuits
• Faulty PCM (Powertrain Control Module)
PCM: Powertrain Control Module, the computer that controls engine and transmission functions.
OBD-II: On-Board Diagnostics, a standardized system in vehicles for self-diagnosing and reporting.
• Use an OBD-II scanner to confirm the P15BB code.
• Inspect the wiring and connectors of the neutral position sensor for damage.
• Test the neutral position sensor for proper operation.
• Replace the neutral position 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
• Honda Accord
• Toyota Camry
• Ford Focus
• Regularly inspect wiring and connectors for damage.
• Ensure proper maintenance of the transmission system.
• Avoid harsh driving conditions that may affect the transmission.
Sensor Issue
• Have the vehicle inspected by a professional mechanic.
• Avoid driving the vehicle if experiencing transmission issues.
Check with the vehicle manufacturer for warranty coverage on transmission components.
The P15BB code has been associated with sensor and wiring issues in various models, often leading to transmission performance problems.
Moderate – It should be addressed soon to prevent further transmission issues.
Driving with a faulty transmission sensor can lead to unsafe driving conditions. It is advisable to repair the issue promptly.
• Vehicle must be in a safe, stationary position.
• Ensure the ignition is off before inspecting wiring.
The neutral position sensor is typically located on the transmission housing, near the gear selector lever.
Q: Can I drive with a P15BB code?
A: It's not recommended to drive with this code as it can lead to transmission issues and unsafe driving conditions.
Q: How do I reset the P15BB code?
A: After repairs, use an OBD-II scanner to clear the code. If the issue is fixed, the code should not return.
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