P1350 Camshaft Position Sensor Circuit Malfunction
The P1350 code indicates a malfunction in the camshaft position sensor circuit (referred to as SGC by Nissan/Infiniti) or an incorrect correlation between the crankshaft position (CKP) and camshaft position (CMP) sensor signals. This code is specific to Nissan and Infiniti vehicles and is not part of the standard SAE J2012 generic OBD2 codes. Proper synchronization between these sensors is critical for ignition timing and fuel injection control; a discrepancy means the sensors are not aligned with the engine's actual mechanical position.
01. Most Common Causes
- Faulty or worn camshaft position (CMP) sensor
- Faulty or damaged crankshaft position (CKP) sensor
- Misaligned or shifted CMP or CKP sensor
- Damaged reluctor ring on the camshaft or crankshaft
- Open, shorted, or high-resistance wiring in the SGC sensor circuit
- Corroded or loose connectors
- Engine timing mechanical issue (stretched, slipped, or incorrectly tensioned timing chain)
- Engine control module (ECM) failure (rare)
02. Symptoms You Will Notice
- Check Engine Light illuminated
- Engine hard to start or no start
- Rough idle or misfire
- Reduced engine power and poor fuel economy
03. Step-by-Step Diagnosis
Scan for codes and verify P1350 is present; check for related codes.
Inspect wiring and connectors for damage, corrosion, or looseness.
Test CMP and CKP sensor resistance and signal output with a multimeter or oscilloscope.
Check sensor alignment and reluctor ring condition.
Verify engine timing (e.g., timing chain alignment marks).
If all else fails, test ECM or replace it as a last resort.
1. Frequently Asked Questions
Is it safe to drive?▼
No, it is not safe to drive. The P1350 code indicates a critical synchronization issue that can cause stalling, poor performance, or no start. Continuing to drive may lead to further engine damage.
How much does it cost to fix?▼
Repair costs typically range from $150 to $600, depending on the root cause. Sensor replacement is usually $100–$300, while timing chain repairs can exceed $1,000.