P151C Chevrolet Code - A/C Conditioning Low Side Refrigerant Pressure Sensor Not Plausible
Quick Answer
The Hybrid Powertrain control module (HPCM2) monitors the low side refrigerant pressure through the A/C refrigerant pressure sensor. Common causes include Low refrigerant, Faulty Low Side Pressure Sensor, Low Side Pressure Sensor harness is open or shorted. 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
- P151C Chevrolet indicates A/C Conditioning Low Side Refrigerant Pressure Sensor Not Plausible.
- Common causes
- Common causes include Low refrigerant, Faulty Low Side Pressure Sensor, Low Side Pressure Sensor harness is open or shorted.
- 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 P151C Chevrolet Description
To make the P151C Air Conditioning (A/C) Low Side Refrigerant Pressure Sensor Not Plausible DTC evaluation, the HPCM2 compares the A/C Low Side Refrigerant Pressure Sensor reading with the A/C high side refrigerant pressure reading after a dormant soak period.
In addition, to make the P151C Air Conditioning (A/C) Low Side Refrigerant Pressure Sensor Not Plausible DTC evaluation, the HPCM2 also uses the A/C temperature sensor 2 reading.
These two sensors are both in the same environment. The HPCM2 compares the values of these sensors after a dormant soak period. The HPCM2 takes the temperature value and calculates an equivalent pressure for gaseous R134a at that temperature and at the pressure as reported by the Air Conditioning (A/C) Low Side Refrigerant Pressure Sensor and compares these.
DTC P151C sets if both of these comparisons show that the A/C Low Side Refrigerant Pressor Sensor is not in agreement with the other sensors.
To make the DTC P2516 Air Conditioning (A/C) Low Side Refrigerant Pressure Sensor evaluation, the HPCM2 looks for a drop in the pressure value after the compressor has run for a short period after a dormant soak period.
What are the Possible Causes of the DTC P151C Chevrolet?
- Low refrigerant
- Faulty Low Side Pressure Sensor
- Low Side Pressure Sensor harness is open or shorted
- Low Side Pressure Sensor circuit poor electrical connection
How to Fix the DTC P151C Chevrolet?
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 P151C Chevrolet 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.
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Frequently Asked Questions about P151C Chevrolet Code
1. What are the common symptoms of OBDII code P151C in a Chevrolet related to the A/C Conditioning Low Side Refrigerant Pressure Sensor?
The common symptoms include poor A/C performance, failure of the A/C system to cool properly, and potential issues with climate control.
2. What can cause the OBDII code P151C related to the A/C Conditioning Low Side Refrigerant Pressure Sensor in a Chevrolet?
Possible causes include a faulty low side refrigerant pressure sensor, wiring issues, low refrigerant level, or problems with the A/C system itself.
3. How can I diagnose the OBDII code P151C in a Chevrolet related to the A/C Conditioning Low Side Refrigerant Pressure Sensor?
Diagnosis involves using a scan tool to read the code, checking the low side refrigerant pressure sensor for proper operation, inspecting wiring for damage, and ensuring the A/C system is functioning correctly.
4. What are some repair tips for fixing OBDII code P151C in a Chevrolet due to the A/C Conditioning Low Side Refrigerant Pressure Sensor?
Repair tips include replacing the low side refrigerant pressure sensor if faulty, repairing any damaged wiring, ensuring the refrigerant level is correct, and verifying proper A/C system operation.
5. Can I drive my Chevrolet with the OBDII code P151C related to the A/C Conditioning Low Side Refrigerant Pressure Sensor?
It is not recommended to drive the vehicle with this code as it can lead to poor A/C performance and potential issues with the climate control system.
6. How serious is the OBDII code P151C in a Chevrolet related to the A/C Conditioning Low Side Refrigerant Pressure Sensor?
While not a critical issue, it is important to address this code to ensure proper functioning of the A/C system and prevent further damage.
7. Are there any safety concerns associated with the OBDII code P151C due to the A/C Conditioning Low Side Refrigerant Pressure Sensor in a Chevrolet?
Safety concerns may arise if the A/C system fails to cool properly, especially in extreme weather conditions, leading to discomfort and potential distractions while driving.
8. Can I reset the OBDII code P151C in a Chevrolet related to the A/C Conditioning Low Side Refrigerant Pressure Sensor?
Resetting the code may temporarily clear the warning light, but it is crucial to diagnose and repair the underlying issue to prevent the code from reappearing.
9. How much does it cost to repair OBDII code P151C in a Chevrolet caused by the A/C Conditioning Low Side Refrigerant Pressure Sensor?
The cost of repair can vary depending on the specific issue, but it may involve sensor replacement, wiring repairs, refrigerant recharging, and labor costs.
10. Is it possible to prevent the OBDII code P151C related to the A/C Conditioning Low Side Refrigerant Pressure Sensor in a Chevrolet?
Regular maintenance of the A/C system, checking refrigerant levels, and addressing any issues promptly can help prevent this code from occurring.
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