The P071E code is a diagnostic trouble code (DTC) that refers to an issue with the Transmission Mode Switch “B” Circuit, indicating a low circuit condition. This code is specifically related to the transmission’s Tow/Haul mode, which enhances shifting for towing applications.
What Does the P071E Code Mean?
The P071E code signifies that the vehicle’s onboard diagnostic system has detected a problem with the Transmission Mode Switch “B” Circuit. This switch is crucial for enabling the Tow/Haul mode, which optimizes the transmission performance when towing heavy loads.
What Causes the P071E Code?
Several factors can trigger the P071E code, including:
- Failure of the shift lever assembly
- Malfunction of the Transmission Control Module (TCM)
- Wiring issues, such as damaged or corroded wires
What Are the Symptoms of the P071E Code?
When the P071E code is present, the most noticeable symptom will be that the towing mode will be disabled. This can affect the vehicle’s performance while towing, leading to potential safety risks.
How Serious Is the P071E Code?
The P071E code is classified as urgent, indicating that immediate action is necessary. Ignoring this code can lead to significant malfunctions and may cause severe damage to the vehicle’s transmission system.
How to Diagnose the P071E Code
Diagnosing the P071E code involves several steps:
- Use an OBD-II scanner to confirm the presence of the P071E code and check for any other related codes.
- Inspect the shift lever assembly and associated wiring for any visible damage or corrosion.
- Test the functionality of the Transmission Control Module (TCM).
- Perform a continuity test on the wiring to ensure there are no breaks in the circuit.
Common Repairs for the P071E Code
Repairs for the P071E code may include:
- Replacing the shift lever assembly if it is found to be faulty.
- Repairing or replacing damaged wiring.
- Replacing the Transmission Control Module (TCM) if it is determined to be defective.
How Much Does It Cost to Fix the P071E Code?
The cost to repair the P071E code can vary widely depending on the specific issue. Simple wiring repairs may cost around $100 to $200, while replacing the shift lever assembly or TCM can range from $300 to $800 or more, depending on the vehicle make and model.
Can I Fix the P071E Code Myself?
If you have experience with automotive repairs and access to diagnostic tools, you may be able to address some of the issues related to the P071E code yourself. However, due to the complexity of the transmission system and the potential for significant damage, it is advisable to consult with a professional mechanic for a thorough diagnosis and repair.
