P0348
Fix within a few daysYour engine's computer is seeing a higher than expected electrical signal from the Camshaft Position Sensor 'A' on Bank 2.
Code P0348 means your engine's Bank 2 camshaft position sensor circuit has a high input. Common causes: Faulty cam sensor (70%), wiring issues (25%). Drivability: Limit driving, fix within a few days. Repair cost: $40-$150 DIY, $140-$450 professional.
Can I Drive With P0348?
Limit driving, fix within a few days
Essential trips under 10 miles, avoid highways and heavy traffic. Be prepared for potential stalling or no-start.
Stop driving immediately if: Engine stalls repeatedly, engine will not start, significant loss of power, or the Check Engine Light is flashing.
Symptoms of P0348
- 1Engine cranks but won't start
- 2Engine stalls unexpectedly
- 3Rough idle or poor engine performance
- 4Reduced engine power or acceleration
- 5Check Engine Light is on
Common Causes of P0348
Parts most likely causing this code, ranked by probability
The sensor itself has failed internally, sending an incorrect high voltage signal to the engine computer.
70% of P0348 cases are fixed by replacing this part
Damaged, corroded, or shorted wiring, or a loose connector to the camshaft position sensor, causes an incorrect high voltage reading.
25% of P0348 cases are fixed by repairing wiring or connectors
A rare internal fault within the engine computer can misinterpret or incorrectly process the sensor's signal.
5% of P0348 cases are fixed by replacing the ECM/PCM
Check These First (Before Buying Parts)
- Visually inspect the camshaft position sensor (Bank 2) and its electrical connector for any obvious damage, corrosion, or loose connections.
- Trace the wiring harness from the sensor as far as you can, looking for any signs of chafing, cuts, or melted insulation.
How to Diagnose P0348
- 1Visually inspect the camshaft position sensor (Bank 2) and its electrical connector for damage, corrosion, or loose connections.
- 2Check the wiring harness leading to the sensor for any signs of fraying, cuts, or shorts.
- 3Using a multimeter, test the voltage at the sensor connector to ensure proper power and ground signals.
- 4If possible, use a scan tool with live data to monitor the camshaft position sensor readings while cranking the engine.
- 5If wiring and voltage are good, replace the camshaft position sensor (Bank 2).
P0348 on Popular Vehicles
Toyota Camry
2007-2024On V6 Camry models, P0348 frequently indicates a failed camshaft position sensor on the rear bank (Bank 2). Wiring issues are less common but should still be checked.
75% fixed by replacing the camshaft position sensor
Honda Accord
2003-2024For V6 Honda Accords, P0348 is a common code for a failing camshaft position sensor on Bank 2. These sensors can become intermittent before complete failure, causing hard starts or stalling.
70% fixed by replacing the camshaft position sensor
Ford F-150
2004-2024On V8 Ford F-150 engines, P0348 can be triggered by a faulty camshaft position sensor on Bank 2. Given the VVT systems, ensure the wiring is secure and free of oil contamination, which can sometimes affect sensor connections.
65% fixed by replacing the camshaft position sensor
Frequently Asked Questions
What does P0348 mean?
P0348 indicates that your engine's computer has detected an electrical signal from the Camshaft Position Sensor 'A' on Bank 2 that is too high.
Can I drive with P0348?
Limit driving, fix within a few days. This code can cause your engine to stall, run poorly, or not start at all, which is unsafe and can leave you stranded.
Will P0348 clear itself?
No, P0348 will not clear itself. The underlying electrical or sensor fault must be repaired before the code will clear, either automatically after several drive cycles or by using a scan tool.
How do I fix P0348 myself?
Start by inspecting the camshaft position sensor and its wiring for visible damage. If the wiring looks good, use a multimeter to check for proper voltage at the sensor connector. If voltage is correct, replacing the camshaft position sensor (Bank 2) is the next step.
How much does it cost to fix P0348?
The cost to fix P0348 yourself is typically $40-$150 for a new camshaft position sensor. A professional repair at a shop will cost $140-$450, including parts and labor.
P0348 keeps coming back - why?
If P0348 keeps returning, it indicates the initial repair did not address the root cause. This often means the wiring issue was missed, there's a problem with the sensor's tone wheel, or, in rare cases, an ECM/PCM fault.
Will P0348 fail emissions/smog test?
Yes, P0348 will cause your vehicle to fail an emissions or smog test. The Check Engine Light being on is an automatic failure in most jurisdictions.
What's the difference between P0348 and P0340?
P0340 is a general code indicating an issue with the Camshaft Position Sensor 'A' circuit. P0348 is more specific, pointing to a 'high input' signal from the Camshaft Position Sensor 'A' on Bank 2.
P0348 on Honda Accord?
P0348 on a Honda Accord often points directly to a faulty camshaft position sensor on Bank 2, especially on V6 models. Inspect the sensor and its wiring carefully, as these sensors can fail with age.
Questions to Ask Your Mechanic
Did you check the voltage at the camshaft position sensor connector on Bank 2?
Good answer: Yes, we confirmed proper 5V reference and ground, and checked the signal wire for shorts or opens.
What were the live data readings for the Bank 2 camshaft position sensor?
Good answer: The sensor was showing a constant high voltage or erratic signal, confirming an internal sensor fault or a wiring short to voltage.
Repair Cost Estimate
DIY Repair
Parts only
$40-$150
Shop Repair
Parts + labor
$140-$450
Save $100-$300 by doing it yourself
Difficulty
intermediate
Time
1-2 hours
Intermediate - requires basic hand tools, a multimeter for electrical checks, and potentially a scan tool for live data monitoring.
Cost of Waiting
Ignoring P0348 can lead to your engine stalling unexpectedly, failing to start, or running with significantly reduced power. This creates a safety hazard and can leave you stranded. A $40-$150 sensor replacement now prevents potential towing costs and severe inconvenience.
Tools You'll Need
- OBD-II scan tool
- Multimeter
- Socket set
- Wrench set
- Screwdriver set
- Wire strippers/crimpers (if wiring repair is needed)
P0348 is a common sensor code. Most repairs are straightforward, involving a sensor replacement, and your engine will run reliably afterward.
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Your Next Steps
Step 1: Perform a thorough visual inspection of the camshaft position sensor on Bank 2 and its wiring harness. Look for frayed wires, corrosion, or a loose connector.
Step 2: If the visual inspection doesn't reveal an obvious issue, use a multimeter to test the voltage at the sensor connector. You should see a 5V reference signal and a good ground. If these are incorrect, trace the wiring back to the ECM.
Step 3: If the wiring and voltage are correct, the camshaft position sensor itself is the most likely culprit. You'll likely need a new camshaft position sensor (Bank 2).