Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
SYS.OK|MANUAL.DB● LIVE
HOMESERVICE MANUALSPLYMOUTH1997BREEZE L4-2.0L VIN CREPAIR AND DIAGNOSISA L L DIAGNOSTIC TROUBLE CODES ( DTC )TESTING AND INSPECTIONDIAGNOSTIC TROUBLE CODE DESCRIPTIONSSCAN TOOL TEXT CODESA/C PRESSURE SENSOR VOLTS TOO HIGH
1997 Plymouth Breeze L4-2.0L VIN C
A/C Pressure Sensor Volts Too High
1997 Plymouth Breeze L4-2.0L VIN CSECTION A/C Pressure Sensor Volts Too High
Name of Code:
A/C Pressure Sensor Volts Too High
When Monitored:
With the ignition on, the engine running, and the A/C relay energized,
Set Condition:
The A/C pressure sensor signal at PCM cavity 42 goes above 4.9 volts.
Theory of Operation:
The A/C pressure sensor informs the PCM if the A/C system pressure is too low or too high. This information allows the PCM to determine if it can engage the compressor clutch. If the A/C system pressure is too low, the PCM will not engage the compressor clutch. If the system pressure is too high, the PCM will disengage the compressor clutch and turn on the cooling fans to prevent the compressor head pressure from becoming too high. The sensor provides a signal to PCM cavity 42. The sensor receives a 5-volt supply from PCM cavity 61. The sensor ground is provided by PCM cavity 43.
Possible Causes:
- Sensor signal open
- Sensor internally open
- PCM failure
- Open sensor ground
A/C Pressure Sensor Volts Too High
When Monitored:
With the ignition on, the engine running, and the A/C relay energized,
Set Condition:
The A/C pressure sensor signal at PCM cavity 42 goes above 4.9 volts.
Theory of Operation:
The A/C pressure sensor informs the PCM if the A/C system pressure is too low or too high. This information allows the PCM to determine if it can engage the compressor clutch. If the A/C system pressure is too low, the PCM will not engage the compressor clutch. If the system pressure is too high, the PCM will disengage the compressor clutch and turn on the cooling fans to prevent the compressor head pressure from becoming too high. The sensor provides a signal to PCM cavity 42. The sensor receives a 5-volt supply from PCM cavity 61. The sensor ground is provided by PCM cavity 43.
Possible Causes:
- Sensor signal open
- Sensor internally open
- PCM failure
- Open sensor ground
RENDER: 1.0x
NO RELATED
Recommended Tools & Savings
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Affiliate disclosure: We may earn a commission at no extra cost to you.
When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.