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 car's computer is having trouble making sure a part inside the engine, called the camshaft, is in the right position. It's like trying to lock a door, but the lock isn't catching.
The engine control module (ECM) is detecting that the camshaft on bank 1 is not reaching its intended locked position. This can affect engine timing and performance.
The P25E4 code indicates that the ECM has detected that the camshaft on bank 1 is unable to achieve its locked position. This could be due to a malfunctioning camshaft actuator, a mechanical issue with the camshaft itself, or a problem with the camshaft position sensor.
• Check engine light is on
• Engine runs rough or misfires
• Decreased fuel efficiency
• Faulty camshaft actuator
• Mechanical failure in the camshaft
• Camshaft position sensor malfunction
Camshaft: A shaft in the engine that controls the opening and closing of the valves.
ECM: Engine Control Module, the computer that controls engine functions.
• Use an OBD-II scanner to confirm the code
• Inspect the camshaft actuator for damage or wear
• Test the camshaft position sensor for proper operation
• Replace the camshaft actuator
• Repair or replace the camshaft if damaged
• Replace the camshaft position sensor
• OBD-II scanner
• Multimeter
• Wrench set
$300 - $800
Moderate
• Toyota Camry
• Honda Accord
• Ford Fusion
• Regular engine maintenance
• Timely oil changes
• Using the correct engine oil
Engine Performance
• Do not ignore the check engine light
• Have the vehicle inspected by a professional
• Avoid hard driving until the issue is resolved
Check if your vehicle's powertrain warranty covers camshaft-related repairs.
This code has been reported in vehicles with variable valve timing systems, especially in models with higher mileage.
Moderate – It should be addressed soon to prevent potential engine damage.
Driving with an unresolved engine issue may lead to increased emissions and potential engine damage.
• Engine at operating temperature
• Vehicle in idle or driving conditions
The camshaft is located in the cylinder head of the engine, typically under the valve cover.
Q: Can I drive with a P25E4 code?
A: It's not recommended to drive for long periods with this code active, as it can lead to further engine damage.
Q: What happens if I ignore this code?
A: Ignoring this code can result in poor engine performance, reduced fuel efficiency, and potential engine damage.
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Fitment Required · Vehicle-fitment part
Commonly relevant for misfire, ignition-efficiency, and some drivability-related repairs.
Misfire and ignition-related faults commonly involve spark plugs as part of the repair path.
Check the correct plug type, gap, and engine application for your vehicle.
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Fitment Required · Vehicle-fitment part
Relevant when the fault points toward ignition-coil performance or cylinder-specific ignition issues.
Some ignition faults involve coil performance or cylinder-specific coil problems.
Match the coil to your engine and confirm the failed component before ordering.
View options on AmazonThese parts may be related to this fault category, but a code by itself does not confirm exact fitment or guarantee that replacing a part will solve the problem.