Easy one-page printout for the garage or repair shop
This summary uses the existing diagnostic information shown in full below.
The car's computer found a problem with the electricity going to the part that heats up the air conditioning coolant. It's like when a toy doesn't work because the batteries aren't connected properly.
This code indicates a discrepancy between the voltage expected by the A/C coolant heater and the actual system voltage, suggesting a potential electrical issue.
The P1D47 code is triggered when the Powertrain Control Module (PCM) detects a voltage correlation issue between the A/C coolant heater and the system voltage. This could be due to a fault in the A/C coolant heater circuit, a problem with the PCM, or an issue with the vehicle's electrical system.
• A/C system not functioning properly
• Check engine light illuminated
• Reduced heating efficiency
• Faulty A/C coolant heater
• Poor electrical connections
• Faulty PCM
PCM: Powertrain Control Module
A/C: Air Conditioning
• Use an OBD-II scanner to confirm the code.
• Inspect the A/C coolant heater and its connections.
• Check the system voltage and compare it to the heater voltage.
• Repair or replace faulty A/C coolant heater.
• Fix any poor electrical connections.
• Reprogram or replace the PCM if necessary.
• OBD-II scanner
• Multimeter
• Basic hand tools
$150 - $500
Moderate
• Honda Accord
• Honda Civic
• Honda CR-V
• Regularly check electrical connections.
• Maintain the vehicle's electrical system.
• Perform routine diagnostics.
Sensor Issue
• Have the vehicle inspected by a professional.
• Avoid using the A/C system until fixed.
• Monitor for any changes in vehicle performance.
Check with the vehicle manufacturer for warranty coverage on electrical components.
This code has been reported in vehicles with aging electrical systems or after improper maintenance.
Moderate – Should be addressed soon to ensure proper A/C function and avoid further electrical issues.
Driving with this code may not be safe if it affects visibility or comfort significantly.
• Engine running
• A/C system activated
The A/C coolant heater is typically located near the A/C compressor or within the HVAC system.
Q: Can I drive with a P1D47 code?
A: While you can drive, it's best to get it checked soon to avoid further issues.
Q: Will this code affect my car's performance?
A: It mainly affects the A/C system, but could lead to other electrical issues if not addressed.
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