P0728
Engine Speed Input Circuit Intermittent
P0728 is an OBD-II diagnostic trouble code meaning: Engine Speed Input Circuit Intermittent. Common causes: damage to the sensor wiring harness, oxidation of contacts in connectors. Estimated repair cost: $17–56.
Symptoms
- Unstable tachometer readings
- Problems with gear shifting (automatic transmission)
- Engine failures
- Check Engine Light Illuminates
- Reduced engine power
Causes
- Damage to the sensor wiring harness
- Oxidation of contacts in connectors
- Engine speed sensor malfunction
- Mechanical damage to the gear
- Circuit Grounding Problems
How to Fix
- Check the integrity of the sensor wiring harness
- Clean contacts in connectors
- Check sensor resistance
- Inspect the gear for damage
- Replace sensor if necessary
Related codes
Error P0728 by Vehicle Brand
FAQ
What does the P0728 code mean?
P0728 is an OBD-II diagnostic trouble code that indicates: Engine Speed Input Circuit Intermittent
What causes a P0728 error code?
The most common causes of P0728 include: Damage to the sensor wiring harness; Oxidation of contacts in connectors; Engine speed sensor malfunction; Mechanical damage to the gear.
How do I fix a P0728 diagnostic trouble code?
To fix P0728: Check the integrity of the sensor wiring harness. Clean contacts in connectors. Check sensor resistance. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P0728?
Yes, but get it checked soon
How much does it cost to fix P0728?
The estimated repair cost for P0728 is $17–56. Actual cost depends on your vehicle, location, and labor rates.
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