P0651 2021 Honda CR-V Code - Sensor Reference Voltage 'B' Circuit Malfunction
Quick Answer
The Powertrain Control Module (PCM) is equipped with a voltage monitor (5 V power source) to supply a stable 5 V to each sensor as a reference voltage. Common causes include A/C pressure sensor VCC line short to power, Accelerator Pedal Position (APP) sensor VCC line short to power, Turbocharger VCC line short to power. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
- What it means
- P0651 2021 Honda CR-V indicates Sensor Reference Voltage 'B' Circuit Malfunction.
- Common causes
- Common causes include A/C pressure sensor VCC line short to power, Accelerator Pedal Position (APP) sensor VCC line short to power, Turbocharger VCC line short to power.
- Severity
- High - diagnose this code as soon as possible.
- Can I drive?
- Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
Code P0651 2021 Honda CR-V Description
What are the Possible Causes of the DTC P0651 2021 Honda CR-V?
- A/C pressure sensor VCC line short to power
- Accelerator Pedal Position (APP) sensor VCC line short to power
- Turbocharger VCC line short to power
- Turbocharger boost sensor VCC line short to power
- Camshaft Position (CMP) sensor A VCC line short to power
- CMP sensor B VCC line short to power
- A/C pressure sensor VCC line short to ground
- APP sensor A/B VCC line short to ground
- Turbocharger VCC line short to ground
- Turbocharger boost sensor VCC line short to ground
- CMP sensor A VCC line short to ground
- CMP sensor B VCC line short to ground
- EVAP leak check module internal circuit failure
- Powertrain Control Module (PCM) internal circuit failure
How to Fix the DTC P0651 2021 Honda CR-V?
Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P0651 2021 Honda CR-V code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.
Need more information about the P0651 2021 Honda CR-V code?
Need more information on how to fix the P0651 2021 Honda CR-V code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the P0651 2021 Honda CR-V code diagnosed by a professional: Find a repair shop in your area
Frequently Asked Questions about P0651 2021 Honda CR-V Code
1. What are the common symptoms of OBDII code P0651 in a 2021 Honda CR-V?
The common symptoms of OBDII code P0651 in a 2021 Honda CR-V include illuminated Check Engine light, rough idling, stalling, and decreased engine performance.
2. What does the OBDII code P0651 'Sensor Reference Voltage 'B' Circuit Malfunction' indicate in a 2021 Honda CR-V?
The OBDII code P0651 in a 2021 Honda CR-V indicates a malfunction in the sensor reference voltage 'B' circuit, which can affect the proper functioning of various sensors in the vehicle.
3. What are the possible causes of OBDII code P0651 in a 2021 Honda CR-V?
Possible causes of OBDII code P0651 in a 2021 Honda CR-V include a faulty sensor, damaged wiring or connectors in the reference voltage circuit, a defective Engine Control Module (ECM), or a weak battery.
4. How can I diagnose the OBDII code P0651 in my 2021 Honda CR-V?
Diagnosing OBDII code P0651 in a 2021 Honda CR-V involves using an OBDII scanner to retrieve the code, inspecting the wiring and connectors related to the sensor reference voltage circuit, and testing the sensors for proper operation.
5. Is it safe to continue driving my 2021 Honda CR-V with OBDII code P0651?
It is not recommended to continue driving a 2021 Honda CR-V with OBDII code P0651, as the malfunctioning sensor reference voltage circuit can lead to potential engine performance issues and further damage if left unresolved.
6. Can I repair OBDII code P0651 in my 2021 Honda CR-V myself?
Repairing OBDII code P0651 in a 2021 Honda CR-V may require advanced automotive knowledge and diagnostic tools. It is recommended to consult a certified mechanic for proper diagnosis and repair.
7. How much does it typically cost to repair OBDII code P0651 in a 2021 Honda CR-V?
The cost of repairing OBDII code P0651 in a 2021 Honda CR-V can vary depending on the underlying cause of the issue. Costs may include parts replacement, labor fees, and diagnostic charges.
8. Can a weak battery cause OBDII code P0651 in a 2021 Honda CR-V?
Yes, a weak or failing battery can potentially cause OBDII code P0651 in a 2021 Honda CR-V, as it may affect the proper voltage supply to the sensors and other components in the vehicle.
9. How long does it typically take to repair OBDII code P0651 in a 2021 Honda CR-V?
The repair time for OBDII code P0651 in a 2021 Honda CR-V can vary depending on the specific cause of the issue and the complexity of the repair. It may range from a few hours to a day or more.
10. Can OBDII code P0651 in a 2021 Honda CR-V reoccur after repair?
If the underlying cause of OBDII code P0651 in a 2021 Honda CR-V is not properly addressed during repair, the code may reoccur. It is important to ensure thorough diagnosis and repair to prevent the issue from coming back.
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