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 CHARTSB1D18
2007 Chrysler 300 V6-2.7L VIN R
B1D18
2007 Chrysler 300 V6-2.7L VIN RSECTION B1D18
B1D0F,B1D18-MIRROR HORIZONTAL POSITION SENSOR INPUT CIRCUIT LOW - DOOR MODULE
For a complete wiring diagram Refer to Diagrams/Electrical.
- When Monitored:
Continuously.
- Set Condition:
When the Driver/Passenger Door Module senses a value below the parameter of the mirror sensor on the Mirror Horizontal Position Signal circuit for over 60 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 B1D0F or B1D18-MIRROR HORIZONTAL POSITION SENSOR INPUT 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
Disconnect the appropriate mirror connector.
With the scan tool, 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 B1D0F or B1D18-MIRROR HORIZONTAL POSITION SENSOR INPUT CIRCUIT LOW?
No
- Replace the Mirror.
- Perform BODY VERIFICATION TEST - VER 1. Body Verification Test
Yes
- Go to 3
3.TEST THE (P65) OR (P68) MIRROR HORIZONTAL POSITION SIGNAL WIRE FOR A SHORT TO GROUND
Turn the ignition off.
Disconnect the appropriate Door Module C4 connector.
Measure the resistance between ground and the (P65) or (P68) Mirror Horizontal Position Signal circuit.
Is the resistance below 5000.0 ohms?
Yes
- Repair the (P65) or (P68) Mirror Horizontal Position Signal circuit for a short to ground.
- Perform BODY VERIFICATION TEST - VER 1. Body Verification Test
No
- Go to 4
4.TEST THE (P65) OR (P68) MIRROR HORIZONTAL POSITION SIGNAL CIRCUIT SHORTED TO THE (P69) OR (P66) MIRROR SENSOR GROUND CIRCUIT.
Measure the resistance between the (P65) or (P68) Mirror Horizontal Position Signal circuit and the (P69) or (P66) Mirror Sensor Ground circuit.
Is the resistance below 5000.0 ohms?
Yes
- Repair the (P65) or (P68) Mirror Horizontal Position Signal 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 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.