B1D37 Jeep Code - Passenger Mirror Heater Control Circuit Low
Quick Answer
If the Passenger Memory Mirror Module senses an excessive current draw on the Passenger Mirror Heater Driver circuit within 10 ms of turning on the Mirror Heater Driver Output. Common causes include Faulty Passenger Mirror Heater, Passenger Mirror Heater harness is open or shorted, Passenger Mirror Heater circuit poor electrical connection. 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
- B1D37 Jeep indicates Passenger Mirror Heater Control Circuit Low.
- Common causes
- Common causes include Faulty Passenger Mirror Heater, Passenger Mirror Heater harness is open or shorted, Passenger Mirror Heater circuit poor electrical connection.
- 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.
Code B1D37 Jeep Description
What are the Possible Causes of the DTC B1D37 Jeep?
- Faulty Passenger Mirror Heater
- Passenger Mirror Heater harness is open or shorted
- Passenger Mirror Heater circuit poor electrical connection
- Faulty Passenger Memory Mirror Module
How to Fix the DTC B1D37 Jeep?
Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the B1D37 Jeep code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.
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Frequently Asked Questions about B1D37 Jeep Code
1. What does the OBDII code B1D37 mean on a Jeep?
B1D37 indicates a problem with the Passenger Mirror Heater Control Circuit, specifically that the circuit is experiencing a low voltage condition.
2. What are the common symptoms of code B1D37 in a Jeep?
Symptoms may include the passenger-side mirror heater not functioning, difficulty defrosting the mirror, or possibly an illuminated check engine or warning light.
3. What causes the B1D37 code to appear?
This code is typically caused by a damaged or corroded wiring harness, a faulty mirror heater element, a blown fuse, or a malfunctioning control module.
4. Can a faulty passenger mirror heater trigger other issues in my Jeep?
While it primarily affects the mirror heater, a persistent issue with this circuit could potentially drain the vehicle's electrical system or cause further circuit-related problems.
5. How do you diagnose the B1D37 code?
Diagnosis involves checking the wiring and connectors for damage or corrosion, testing the mirror heater element for continuity, and inspecting the fuse and control module for faults.
6. Can I drive my Jeep with the B1D37 code active?
Yes, the vehicle is generally safe to drive, but you may experience reduced visibility in cold or foggy conditions due to the non-functional mirror heater.
7. How do you fix the B1D37 code on a Jeep?
Repairs may include replacing damaged wiring, repairing corroded connectors, replacing the mirror heater element, or addressing issues with the control module.
8. How much does it cost to fix the B1D37 code?
Repair costs can vary widely, from $50 to $300 or more, depending on whether the issue involves minor wiring repairs or the replacement of the mirror assembly.
9. Can I reset the B1D37 code without fixing the issue?
You can clear the code with an OBDII scanner, but if the underlying issue isn’t resolved, the code will likely return.
10. Is the B1D37 code a common issue in Jeeps?
While not extremely common, it can occur in vehicles with heated mirrors, especially in older models or in regions with harsh weather conditions that may cause wear and tear on the system.
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