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 isn't getting enough power to control the transmission properly. It's like trying to use a toy with weak batteries.
The Transmission Control Module (TCM) needs power to manage the transmission. This code indicates that the power relay controlling the TCM is not providing sufficient voltage.
The P0886 code is triggered when the Powertrain Control Module (PCM) or the Transmission Control Module (TCM) detects a low voltage condition in the TCM power relay control circuit. This can prevent the TCM from operating correctly, leading to transmission issues.
• Check Engine Light is on
• Transmission may not shift properly
• Vehicle may enter 'limp' mode
• Poor fuel economy
• Transmission warning light may be on
• Faulty TCM power relay
• Blown fuse in the TCM circuit
• Wiring issues such as shorts or open circuits
• Faulty TCM
• Corroded or damaged connectors
TCM: Transmission Control Module
PCM: Powertrain Control Module
Relay: An electrical switch that opens and closes under control of another electrical circuit
• Check for other codes and address them first.
• Inspect the TCM power relay for faults.
• Check fuses related to the TCM circuit.
• Inspect wiring and connectors for damage or corrosion.
• Test the TCM for proper operation.
• Replace the faulty TCM power relay.
• Replace any blown fuses.
• Repair or replace damaged wiring or connectors.
• Replace the TCM if necessary.
• OBD-II scanner
• Multimeter
• Basic hand tools (screwdrivers, pliers)
$100 - $500
Moderate
• Chrysler 300
• Dodge Grand Caravan
• Jeep Grand Cherokee
• Regularly inspect and maintain vehicle wiring.
• Ensure battery terminals are clean and tight.
• Have regular vehicle check-ups to catch issues early.
Electrical Issue
• Avoid driving the vehicle until the issue is resolved to prevent further damage.
• Consult a professional mechanic for a thorough diagnosis.
Check your vehicle's warranty for coverage on electrical components.
This code has been commonly reported in vehicles with electrical issues related to the transmission control system.
High – This issue can lead to transmission failure and should be addressed promptly.
Driving with this code active can lead to unsafe driving conditions and potential transmission damage.
• Vehicle should be at operating temperature.
• Ensure all electrical systems are functioning properly.
The TCM power relay is typically located in the vehicle's fuse box or relay box, often under the hood or in the passenger compartment.
Q: Can I drive with a P0886 code?
A: It's not recommended to drive with this code active as it can cause transmission issues and unsafe driving conditions.
Q: How do I reset the P0886 code?
A: After repairs, use an OBD-II scanner to clear the code, but ensure the issue is fixed to prevent it from returning.
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