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 has detected that the sensor that checks for water in the fuel is sending signals on and off, like a flickering light bulb.
The vehicle's onboard computer has identified an intermittent issue with the circuit for the water in fuel sensor B. This means the sensor is not consistently sending a signal, which can indicate a problem with the sensor or its connections.
The P238E code is triggered when the Powertrain Control Module (PCM) detects an intermittent signal from the water in fuel sensor B circuit. This sensor is responsible for detecting the presence of water in the fuel system, which can cause engine performance issues if not addressed. An intermittent signal can be caused by faulty wiring, a failing sensor, or poor connections.
• Check Engine Light is on
• Engine performance issues
• Possible fuel contamination warning
• Faulty water in fuel sensor B
• Damaged or corroded wiring or connectors
• Poor electrical connections in the circuit
PCM: Powertrain Control Module
OBD-II: On-Board Diagnostics, Second Generation
• Use an OBD-II scanner to confirm the code.
• Inspect the wiring and connectors for damage or corrosion.
• Test the water in fuel sensor B for proper operation.
• Replace the faulty water in fuel sensor B.
• Repair or replace damaged wiring or connectors.
• Ensure all connections are secure and free of corrosion.
• OBD-II scanner
• Multimeter
• Basic hand tools (screwdrivers, pliers)
$100 - $300
Moderate
• Ford F-250
• Chevrolet Silverado
• Dodge Ram 2500
• Regularly check and maintain the fuel system.
• Use high-quality fuel to prevent contamination.
• Inspect and clean connectors and wiring periodically.
Sensor Issue
• Avoid driving with this code active to prevent engine damage.
• Consult a professional mechanic for a thorough diagnosis.
Check with your vehicle manufacturer for warranty coverage on sensors.
This code is relatively uncommon and usually associated with vehicles that have experienced fuel contamination or have been operated in harsh environments.
Moderate – Address this issue soon to prevent potential engine performance problems.
Driving with a faulty fuel sensor can lead to engine damage and reduced performance. Address the issue promptly.
• Vehicle must be running.
• Sensor and circuit should be at normal operating temperature.
The water in fuel sensor is typically located near the fuel filter or in the fuel tank.
Q: Can I drive with a P238E code?
A: It's not recommended to drive for long periods with this code active, as it can lead to engine damage.
Q: How do I know if my fuel is contaminated?
A: Symptoms of fuel contamination include poor engine performance, stalling, and a check engine light.
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