P30D5
NOx Sensor 3 Signal Message Counter Incorrect
P30D5 is an OBD-II diagnostic trouble code meaning: NOx Sensor 3 Signal Message Counter Incorrect. Common causes: nox 3 sensor malfunction, damaged wiring or poor contact in the nox 3 sensor circuit. Estimated repair cost: $133–278.
Symptoms
- Check Engine Light Is On
- Reduced engine power
- Increased fuel consumption
- Rough engine idling
- Failed Emission Test Attempts
Causes
- NOx 3 sensor malfunction
- Damaged wiring or poor contact in the NOx 3 sensor circuit
- Problems with power or grounding of the sensor
- Engine ECU malfunction
- Software error in the engine control system
How to Fix
- Check the integrity of the wires and connectors of the NOx sensor 3
- Check the supply voltage and grounding of the sensor
- Read error codes using an OBD-II scanner for additional diagnostics
- If necessary, replace NOx sensor 3
- Check and update ECU software if necessary
Related codes
FAQ
What does the P30D5 code mean?
P30D5 is an OBD-II diagnostic trouble code that indicates: NOx Sensor 3 Signal Message Counter Incorrect
What causes a P30D5 error code?
The most common causes of P30D5 include: NOx 3 sensor malfunction; Damaged wiring or poor contact in the NOx 3 sensor circuit; Problems with power or grounding of the sensor; Engine ECU malfunction.
How do I fix a P30D5 diagnostic trouble code?
To fix P30D5: Check the integrity of the wires and connectors of the NOx sensor 3. Check the supply voltage and grounding of the sensor. Read error codes using an OBD-II scanner for additional diagnostics. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P30D5?
Yes, but get it checked soon
How much does it cost to fix P30D5?
The estimated repair cost for P30D5 is $133–278. Actual cost depends on your vehicle, location, and labor rates.
See also: Russian version · NationStat