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 a sensor that checks the temperature of a part of the car's electric motor system is not working right. It's like a thermometer giving a strange reading.
The code indicates an issue with the temperature sensor in the drive motor's inverter circuit, which is giving an implausible reading.
The P1E26 code is triggered when the Powertrain Control Module (PCM) detects an implausible signal from the temperature sensor 'C' in the drive motor 'B' inverter circuit. This could mean the sensor is faulty or the readings are outside the expected range.
• Check Engine Light is on
• Reduced vehicle performance
• Possible overheating of the inverter
• Faulty temperature sensor
• Wiring issues such as shorts or opens in the circuit
• Faulty inverter or control module
Inverter: A device that converts DC power to AC power in electric vehicles.
PCM: Powertrain Control Module, the computer that controls the engine and transmission.
• Scan the vehicle for codes and freeze frame data
• Inspect the wiring and connectors for damage
• Test the temperature sensor for proper operation
• Replace the faulty temperature sensor
• Repair or replace damaged wiring
• Replace the inverter if necessary
• OBD-II scanner
• Multimeter
• Basic hand tools
$150 - $500
Moderate
• Chevrolet Volt
• Chevrolet Bolt
• Cadillac ELR
• Regular maintenance checks
• Ensure proper cooling system function
• Monitor for unusual vehicle behavior
Sensor Issue
• Do not ignore the check engine light
• Seek professional diagnostic service
• Avoid heavy loads until repaired
Check with the manufacturer for warranty coverage on powertrain components.
This code commonly appears in hybrid and electric vehicles due to their complex powertrain systems.
Moderate – It should be addressed soon to avoid potential damage to the inverter.
Operating the vehicle with this code may lead to reduced performance and efficiency.
• Engine at operating temperature
• Vehicle in a safe environment for testing
The temperature sensor is located in the inverter of drive motor 'B', usually near the electric motor assembly.
Q: Can I drive with a P1E26 code?
A: It's not recommended to drive for long with this code, as it may lead to further issues.
Q: How can I reset the P1E26 code?
A: Fix the underlying issue, then use an OBD-II scanner to clear the code.
High-End · Full-system diagnostics
A full-system bidirectional platform aimed at advanced DIY users and professional diagnostic workflows.
Network faults often require full-system access instead of a generic code reader alone.
View on Amazon
Universal · Digital multimeter
A solid entry-level multimeter for voltage, continuity, resistance, and basic electrical troubleshooting.
Helpful for checking voltage drops, grounds, and basic circuit health when modules are not communicating.
View on Amazon
Universal · Wire connectors and repair kit
Useful when diagnosis points toward damaged wiring, corroded terminals, or connector repairs.
Useful if diagnosis points toward damaged connectors, wiring, or terminal repairs.
View on AmazonThese are optional diagnostic tools, not guaranteed fixes. As an Amazon Associate I earn from qualifying purchases.