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 found a problem with the part that helps the car decide which gear to be in. It's like when a toy car's remote control isn't working right.
The P1DCC code indicates an issue with the electrical circuit that controls the motor responsible for selecting the transmission range. This circuit is reading a lower voltage than expected.
The P1DCC code is triggered when the Powertrain Control Module (PCM) detects a low voltage condition in the circuit responsible for the transmission range select motor driver 'B'. This can affect the vehicle's ability to properly select gears.
• Check Engine Light is on
• Transmission may not shift properly
• Vehicle may go into limp mode
• Faulty transmission range select motor
• Damaged wiring or connectors
• Faulty Drive Motor Control Module
PCM: Powertrain Control Module
OBD-II: On-Board Diagnostics II
• Use an OBD-II scanner to confirm the code.
• Inspect wiring and connectors for damage or corrosion.
• Test the transmission range select motor for proper operation.
• Repair or replace damaged wiring or connectors.
• Replace the transmission range select motor if faulty.
• Replace the Drive Motor Control Module if necessary.
• OBD-II scanner
• Multimeter
• Basic hand tools
$200 - $800
Moderate
• Chevrolet Volt
• Toyota Prius
• Nissan Leaf
• Regularly inspect wiring and connectors.
• Perform routine maintenance on the transmission system.
• Keep the vehicle's electrical system in good condition.
Transmission Control Issue
• Avoid driving the vehicle until repaired to prevent further damage.
• Consult with a professional mechanic for accurate diagnosis.
Check with the vehicle manufacturer for warranty coverage on transmission components.
This code is more common in hybrid and electric vehicles due to their complex transmission systems.
Moderate – It is advisable to address this issue soon to avoid potential transmission damage.
Driving with a faulty transmission can be unsafe. Ensure repairs are made promptly.
• Vehicle at operating temperature
• Transmission in various gear positions
The transmission range select motor is typically located on or near the transmission assembly.
Q: Can I drive with a P1DCC code?
A: It's not recommended as it may lead to transmission issues or damage.
Q: How do I reset the P1DCC code?
A: After repairs, use an OBD-II scanner to clear the code. If the issue persists, the code will return.
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