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 is having trouble reading how fast the engine is spinning. It's like if your watch couldn't tell time correctly.
The Engine Control Module (ECM) is not receiving the correct engine speed signal from the crankshaft position sensor.
P0726 indicates that the ECM has detected a problem with the signal from the engine speed input circuit, which is typically the crankshaft position sensor. This sensor provides critical data about the engine's RPM, which is used for various functions including transmission shifting and engine timing.
• Check Engine Light is on
• Transmission shifting issues
• Engine stalling or running rough
• Faulty crankshaft position sensor
• Wiring issues such as shorts or open circuits
• Faulty ECM or TCM (Transmission Control Module)
ECM: Engine Control Module
TCM: Transmission Control Module
RPM: Revolutions Per Minute
• Use an OBD-II scanner to confirm the code.
• Inspect the crankshaft position sensor and its wiring.
• Test the sensor's signal with a multimeter.
• Replace the crankshaft position sensor if faulty.
• Repair or replace damaged wiring or connectors.
• Reprogram or replace the ECM/TCM if necessary.
• OBD-II scanner
• Multimeter
• Basic hand tools
$150 to $400
Moderate
• Nissan Altima
• Ford F-150
• Honda Accord
• Regular maintenance checks
• Ensure wiring harnesses are secure
• Use quality replacement parts
Sensor Issue
• Avoid driving the vehicle until repaired to prevent further damage.
• Consult a professional mechanic for accurate diagnosis.
Check if the vehicle's powertrain warranty covers sensor replacement.
This code has been associated with issues in vehicles with high mileage or poor maintenance history.
Moderate – should be addressed soon to avoid transmission or engine performance issues.
Driving with this code active may lead to unsafe driving conditions due to transmission or engine performance issues.
• Vehicle at operating temperature
• Engine running at idle
The crankshaft position sensor is typically located near the bottom of the engine, often near the crankshaft pulley.
Q: Can I drive with a P0726 code?
A: It's not recommended as it may lead to transmission issues or engine stalling.
Q: How do I reset the P0726 code?
A: After repairs, use an OBD-II scanner to clear the code from the ECM.
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