B1628
PRNDL Reverse Input Open Circuit
B1628 is an OBD-II diagnostic trouble code meaning: PRNDL Reverse Input Open Circuit. Common causes: broken or damaged wiring harness to the prndl sensor, oxidation of contacts in the selector position sensor connectors. Estimated repair cost: $11–167.
Symptoms
- Inability to engage reverse gear
- Transmission indicator flashing (PRNDL)
- Automatic transmission goes into emergency mode
- Lack of response when switching the selector to position R
Causes
- Broken or damaged wiring harness to the PRNDL sensor
- Oxidation of contacts in the selector position sensor connectors
- Malfunction of the selector position sensor itself
- Problems with the sensor power or ground circuits
- Mechanical damage to the wiring in the area of the automatic transmission selector
How to Fix
- Conduct a visual inspection of the wiring and connectors of the PRNDL sensor
- Check continuity with a multimeter
- Clean connector contacts from oxidation
- Check the resistance of the selector lever position sensor
- If necessary, replace damaged wires or sensor
Related codes
FAQ
What does the B1628 code mean?
B1628 is an OBD-II diagnostic trouble code that indicates: PRNDL Reverse Input Open Circuit
What causes a B1628 error code?
The most common causes of B1628 include: Broken or damaged wiring harness to the PRNDL sensor; Oxidation of contacts in the selector position sensor connectors; Malfunction of the selector position sensor itself; Problems with the sensor power or ground circuits.
How do I fix a B1628 diagnostic trouble code?
To fix B1628: Conduct a visual inspection of the wiring and connectors of the PRNDL sensor. Check continuity with a multimeter. Clean connector contacts from oxidation. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with B1628?
Limited driving only, diagnose soon
How much does it cost to fix B1628?
The estimated repair cost for B1628 is $11–167. Actual cost depends on your vehicle, location, and labor rates.
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