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 reading signals from a sensor that checks how well cylinder 3 is working.
The ion current sensing circuit monitors the combustion process in the engine's cylinder 3 by detecting ionization levels. This code indicates a problem with that circuit.
The P2898 code is triggered when the Engine Control Module (ECM) detects an issue with the ion current sense circuit for cylinder 3. This circuit is responsible for monitoring the ionization in the combustion chamber, which helps in detecting misfires and optimizing ignition timing.
• Check Engine Light is on
• Poor engine performance
• Increased fuel consumption
• Faulty ion current sensor
• Damaged wiring or connectors
• ECM software issue
ECM: Engine Control Module
Ionization: The process of adding or removing electrons to create ions, used to monitor combustion in engines.
• Use an OBD-II scanner to confirm the code.
• Inspect the wiring and connectors for damage.
• Test the ion current sensor for proper operation.
• Replace the faulty ion current sensor.
• Repair or replace damaged wiring and connectors.
• Update or reprogram the ECM if necessary.
• OBD-II scanner
• Multimeter
• Wrench set
$150 - $500
Moderate
• Toyota Camry
• Honda Accord
• Ford Fusion
• Regular maintenance checks
• Keep wiring and connectors clean and secure
• Use quality fuel to prevent deposits
Sensor Issue
• Avoid hard driving until repaired.
• Schedule a service appointment promptly.
Check if the vehicle's powertrain warranty covers sensor and ECM issues.
This code has been more common in vehicles with high mileage or those that have not had regular maintenance.
Moderate – It should be addressed soon to avoid potential engine damage.
Driving with an active Check Engine Light may violate emissions laws and could lead to further engine damage.
• Engine at operating temperature
• Vehicle in idle or low-speed driving conditions
The ion current sensor is typically located near the ignition coil or spark plug of cylinder 3.
Q: Can I drive with a P2898 code?
A: It's not recommended to drive for long periods with this code active, as it can lead to engine performance issues.
Q: What happens if I ignore the P2898 code?
A: Ignoring this code can result in poor fuel economy, increased emissions, and potential engine damage.
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Universal · Digital multimeter
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Helpful for checking voltage drops, grounds, and basic circuit health when modules are not communicating.
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Useful when diagnosis points toward damaged wiring, corroded terminals, or connector repairs.
Useful if diagnosis points toward damaged connectors, wiring, or terminal repairs.
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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.