| DTC Data Sheet | |
| System | Powertrain |
| Standard | SAE J2012 / ISO 15031-6 |
| Fault type | Circuit High |
| Official meaning | Camshaft Position Sensor "A" Circuit High Input (Bank 2) |
Bank 2 CMP signal voltage is above the maximum threshold — short to power, open ground, or failed sensor.
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P0348 Quick Answer
Bank 2 CMP signal voltage is above the maximum threshold — short to power, open ground, or failed sensor.
What Does P0348 Mean?
Camshaft Position Sensor "A" Circuit High Input (Bank 2). Bank 2 CMP signal voltage is above the maximum threshold — short to power, open ground, or failed sensor.
Symptoms
- Hard start
- Bank 2 misfires
- Check engine light
Common Causes
- Short to 12 V on bank 2 CMP signal wire
- Open ground in bank 2 CMP circuit
- Failed bank 2 CMP sensor (stuck high)
Diagnosis Steps
You’ll need a scan tool capable of reading live powertrain data, a digital multimeter, and access to the wiring diagram for the specific platform.
- Verify ground integrity at the bank 2 CMP connector.
- Inspect harness for shorts to power circuits.
- Replacement-check by swapping in a known-good sensor.
Possible Fixes
- Bank 2 CMP replacement
- Wiring repair
Can I Still Drive With P0348?
The vehicle will usually still drive with P0348 stored, but performance, drivability, or emissions will be degraded. The PCM may inhibit emissions monitors and limit closed-loop fueling adjustments. Drive to a workshop, but don’t ignore the code long-term.
How Serious Is This Code?
P0348 is a moderate-priority fault. It will not prevent the engine from running, but unaddressed it can cascade into related faults or damage downstream components such as the catalytic converter. Address within a few drive cycles.
FAQ
Will P0348 clear itself?
Only if the underlying fault was intermittent and self-corrected. Most root causes are persistent and require physical repair.
Can I clear P0348 without fixing it?
You can clear it with a scan tool, but it will return as soon as the fault condition reappears — typically within one or two drive cycles.
Is P0348 related to other codes?
Often, yes. Adjacent codes in the same circuit or system frequently set together — if P0348 is present, scan for related codes and address them as a group.