Easy one-page printout for the garage or repair shop
This summary uses the existing diagnostic information shown in full below.
This code means that the computer in your car has detected a problem with the sensor that measures the voltage in the electric motor's circuit. It's reading higher than it should be.
The P1E49 code indicates that the sensor monitoring the DC link voltage in Drive Motor 'B' is reporting a voltage that is higher than expected.
The DC link voltage sensor is responsible for measuring the voltage in the internal circuit of Drive Motor 'B'. If this sensor reports a voltage that is outside the normal range (too high), the powertrain control module (PCM) will trigger the P1E49 code. This could be due to a sensor fault, wiring issue, or an actual problem with the voltage levels.
• Check Engine Light illuminated
• Possible reduced performance of the electric motor
• Unusual noises from the drive motor
• Faulty DC link voltage sensor
• Wiring issues such as shorts or opens in the sensor circuit
• Faulty powertrain control module (PCM)
DC Link: Direct Current link, a part of the electrical system that connects components.
PCM: Powertrain Control Module, the vehicle's computer that controls the engine and transmission.
• Use an OBD-II scanner to confirm the code.
• Inspect the wiring and connectors for the DC link voltage sensor.
• Test the DC link voltage sensor for proper operation.
• Replace the faulty DC link voltage sensor.
• Repair or replace damaged wiring or connectors.
• Reprogram or replace the PCM if necessary.
• OBD-II scanner
• Multimeter
• Basic hand tools
$200 - $500
Moderate
• Chevrolet Volt
• Cadillac ELR
• Chevrolet Bolt
• Regular maintenance of the vehicle's electrical system
• Ensure all connectors and wiring are secure and undamaged
• Regularly check for software updates for the vehicle's PCM
Sensor Issue
• Avoid driving the vehicle until the issue is diagnosed and repaired.
• Consult with a certified mechanic for a thorough inspection.
Check with the vehicle manufacturer for specific warranty coverage related to the powertrain and electrical components.
This code is relatively common in hybrid and electric vehicles, where precise voltage monitoring is crucial for performance and safety.
Moderate – While the vehicle may still operate, ignoring this issue could lead to reduced performance or further damage.
Operating a vehicle with a known fault in the electrical system may violate emissions regulations and could pose a safety risk.
• Vehicle at operating temperature
• Drive motor active
The DC link voltage sensor is typically located within or near the drive motor assembly, often integrated into the motor control unit.
Q: What happens if I ignore the P1E49 code?
A: Ignoring this code can lead to reduced vehicle performance and potentially more severe electrical issues.
Q: Can I drive my car with the P1E49 code?
A: It's not recommended to drive with this code active, as it may affect the vehicle's performance and safety.
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