P071E Code - Transmission Mode Switch 'B' Circuit Low
Quick Answer
The P071E diagnostic trouble code (DTC) indicates an issue with the Transmission Mode Switch 'B' Circuit being detected as low. Common causes include Faulty transmission mode switch, Damaged wiring or connectors in the circuit, Malfunctioning transmission control module (TCM). 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
- P071E indicates Transmission Mode Switch 'B' Circuit Low.
- Common causes
- Common causes include Faulty transmission mode switch, Damaged wiring or connectors in the circuit, Malfunctioning transmission control module (TCM).
- 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 P071E Description
The P071E diagnostic trouble code (DTC) indicates an issue with the Transmission Mode Switch 'B' Circuit being detected as low. This switch is responsible for informing the vehicle's transmission control module (TCM) about the selected gear mode, such as Park, Reverse, Neutral, Drive, or Manual. When the circuit is detected as low, it means that the voltage signal from the switch is below the expected range, causing a malfunction in the transmission control system.
Common Causes of P071E
- Faulty transmission mode switch.
- Damaged wiring or connectors in the circuit.
- Malfunctioning transmission control module (TCM).
- Software glitch in the TCM.
- Corrosion or moisture in the switch or circuit.
Symptoms of P071E
- Check engine light illuminated on the dashboard.
- Erratic shifting behavior, such as delayed or harsh gear changes.
- Transmission getting stuck in a single gear.
- Difficulty engaging or disengaging gears.
- Reduced fuel efficiency due to improper gear selection.
How to Fix P071E
- Begin by conducting a thorough inspection of the transmission mode switch, wiring, and connectors for any visible damage or corrosion.
- Use a multimeter to test the voltage output of the switch to determine if it falls within the specified range.
- If the switch is faulty, replace it with a new one and ensure proper installation.
- Check and repair any damaged wiring or connectors in the circuit.
- Clear the DTC from the vehicle's memory using a diagnostic scan tool and perform a test drive to confirm that the issue has been resolved.
Cost to Fix P071E
The typical repair costs for addressing a Transmission Mode Switch 'B' Circuit Low issue can vary depending on the specific cause of the problem and the vehicle's make and model. In general, replacing a faulty transmission mode switch can range from $100 to $300, including parts and labor. However, if additional repairs or diagnostics are needed, the total cost could be higher. It's recommended to consult with a professional mechanic or auto repair shop to get an accurate estimate based on your vehicle's specific requirements. Keep in mind that labor rates can vary between different service providers and locations.
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