Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSCHRYSLER2007300 V6-2.7L VIN RREPAIR AND DIAGNOSISA L L DIAGNOSTIC TROUBLE CODES ( DTC )TESTING AND INSPECTIONB CODE CHARTSB1D12
2007 Chrysler 300 V6-2.7L VIN R
B1D12
2007 Chrysler 300 V6-2.7L VIN RSECTION B1D12
B1D09,B1D12-MIRROR POSITION SENSOR POWER SUPPLY CIRCUIT LOW - MEMORY MIRROR MODULE
For a complete wiring diagram Refer to Diagrams/Electrical.
- When Monitored:
Continuously.
- Set Condition:
When the Driver Door Module senses voltage below 4.3 volts on the Mirror Position Sensor Supply circuit for over 30 ms, this code will set.
NOTE: This test covers both the Driver and Passenger code depending on the side the code appeared in.
Diagnostic Test
1.TEST FOR INTERMITTENT CONDITION
Turn the ignition on.
With the scan tool, record and erase DTC's
Operate the Mirror Switch in all directions several times.
Cycle the ignition from on to off three times.
Turn the ignition on.
With the scan tool, read DTC's.
Does the scan tool display B1D09 or B1D12-MIRROR POSITION SENSOR POWER SUPPLY CIRCUIT LOW?
Yes
- Go To 2
No
- The conditions that caused this code to set are not present at this time. Using the wiring diagram/schematic as a guide, inspect the wiring and connectors.
- Perform BODY VERIFICATION TEST - VER 1. Body Verification Test
2.TEST FOR A SHORTED MIRROR
Turn the ignition off.
Disconnect the appropriate mirror connector.
Turn the ignition on.
Measure the voltage between the (P145) or (P146) Mirror Position Sensor Supply circuit and the ((P69) or (P66) Mirror Sensor Ground circuit.
Is the voltage above 4.6 volts?
Yes
- Replace the Mirror.
- Perform BODY VERIFICATION TEST - VER 1. Body Verification Test
No
- Go to 3
3.TEST THE (P145) OR (P146) MIRROR POSITION SENSOR SUPPLY WIRE
Turn the ignition off.
Disconnect the appropriate Driver Door Module connector.
Measure the resistance between ground and the (P145) or (P146) Mirror Position Sensor Supply circuit.
Is the resistance below 5000.0 ohms?
Yes
- Repair the (P145) or (P146) Mirror Position Sensor Supply circuit for a short to ground.
- Perform BODY VERIFICATION TEST - VER 1. Body Verification Test
No
- Go to 4
4.TEST THE (P145) OR (P146) MIRROR POSITION SENSOR SUPPLY WIRE SHORTED TO THE (P69) OR (P66) MIRROR SENSOR GROUND CIRCUIT.
Measure the resistance between the (P145) or (P146) Mirror Position Sensor Supply circuit and the (P69) or (P66) Mirror Sensor Ground circuit.
Is the resistance below 5000.0 ohms?
Yes
- Repair the (P145) or (P146) Mirror Position Sensor Supply circuit for a short to the (P69) or (P66) Sensor Ground Circuit.
- Perform BODY VERIFICATION TEST - VER 1. Body Verification Test
No
- Replace the appropriate Driver Door Module.
- Perform BODY VERIFICATION TEST - VER 1. Body Verification Test
RENDER: 1.0x
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.