P0885 RAM Code - TCM Power Relay Control Circuit/Open
Quick Answer
The P0885 diagnostic trouble code (DTC) refers to the TCM (Transmission Control Module) Power Relay Control Circuit being open or having a malfunction. Common causes include Faulty TCM power relay, Corroded or damaged wiring in the TCM power relay circuit, Loose or poor connections in the circuit. 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
- P0885 RAM indicates TCM Power Relay Control Circuit/Open.
- Common causes
- Common causes include Faulty TCM power relay, Corroded or damaged wiring in the TCM power relay circuit, Loose or poor connections in the circuit.
- 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 P0885 RAM Description
The P0885 diagnostic trouble code (DTC) refers to the TCM (Transmission Control Module) Power Relay Control Circuit being open or having a malfunction. The TCM is responsible for controlling the transmission functions in a vehicle, such as shifting gears and managing torque converter lockup. The power relay controls the supply of power to the TCM, allowing it to function properly. When this circuit is open or experiencing an issue, it can lead to a variety of problems with the transmission system.
Common Causes of P0885 RAM
- Faulty TCM power relay
- Corroded or damaged wiring in the TCM power relay circuit
- Loose or poor connections in the circuit
- Faulty TCM
- Issues with the power supply to the TCM
Symptoms of P0885 RAM
- Erratic shifting or failure to shift gears
- Transmission slippage
- Vehicle going into "limp mode"
- Check Engine Light illuminated
- Loss of power or acceleration
How to Fix P0885 RAM
- Begin by conducting a thorough inspection of the TCM power relay and associated wiring to check for any visible damage or corrosion.
- Test the TCM power relay using a multimeter to determine if it is functioning correctly. Replace the relay if it is found to be faulty.
- Inspect and repair any damaged or corroded wiring in the TCM power relay circuit.
- Check and tighten any loose connections in the circuit to ensure a secure connection.
- If the issue persists, consider replacing the TCM if it is determined to be faulty.
Cost to Fix P0885 RAM
The cost of repairing a P0885 code can vary depending on the specific cause of the issue and the vehicle's make and model. On average, the cost of replacing a TCM power relay can range from $100 to $300, including parts and labor. Additional costs may be incurred if other components need to be replaced or if further diagnostics are required. It is advisable to consult with a professional mechanic to get an accurate estimate based on your vehicle's specific needs. Keep in mind that labor rates can vary, so it's recommended to check local rates for a more precise estimate.
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Frequently Asked Questions about P0885 RAM Code
1. What does the OBDII code P0885 mean on a RAM vehicle?
P0885 indicates an issue with the Transmission Control Module (TCM) power relay control circuit, often due to an open circuit or electrical fault.
2. What are the common symptoms of code P0885 in a RAM vehicle?
Symptoms can include transmission not shifting properly, the vehicle being stuck in limp mode, a check engine light, and poor overall drivability.
3. What causes the P0885 code to appear in a RAM vehicle?
Common causes include a faulty TCM power relay, damaged wiring or connectors, a malfunctioning TCM, or a blown fuse related to the transmission system.
4. Can you drive a RAM vehicle with a P0885 code active?
Driving with this code is not recommended as the transmission may not function correctly, potentially leading to further damage or unsafe driving conditions.
5. How do you diagnose the P0885 code in a RAM vehicle?
Diagnosing involves checking the TCM power relay, inspecting wiring and connectors for damage, testing power supply and ground circuits, and verifying the functionality of the TCM.
6. How do you fix the P0885 code on a RAM vehicle?
Repairs may include replacing the TCM power relay, repairing or replacing damaged wiring or connectors, replacing a blown fuse, or, in rare cases, replacing the TCM itself.
7. Where is the TCM power relay located on a RAM vehicle?
The TCM power relay is typically found in the power distribution center (fuse box), but the exact location may vary depending on the model and year of your RAM vehicle.
8. What tools are needed to fix the P0885 code?
You’ll need a diagnostic scanner, a multimeter for electrical testing, and possibly basic tools like pliers and screwdrivers to access and repair components.
9. Can a weak battery cause the P0885 code in a RAM vehicle?
Yes, a weak or failing battery can result in insufficient voltage to the TCM, potentially triggering the P0885 code.
10. How much does it cost to repair the P0885 code on a RAM vehicle?
Repair costs can vary but typically range from $50 to $300, depending on whether the issue is a simple relay replacement or involves more extensive wiring repairs or TCM replacement.
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