1. Specific Meaning of Honda P1392
The P1392 code on Honda vehicles indicates:
“Misalignment between CKP (crankshaft) and CMP (camshaft) sensor signals – Intermittent error”
Technical characteristics:
- Directly affects the VTEC and VTC (Variable Timing Control) system
- Can cause engine RPM limitation (limp mode)
- Particularly sensitive on engines with timing chains
2. Affected Honda Models
| Model | Engine | Years | Critical Mileage |
|---|---|---|---|
| Civic | 1.5L Turbo (L15B7) | 2016-2023 | 60,000-100,000 km |
| CR-V | 1.5L Turbo (L15BE) | 2017-2023 | 70,000-110,000 km |
| Accord | 2.0L Turbo (K20C4) | 2018-2023 | 50,000-90,000 km |
| HR-V | 1.8L (R18Z9) | 2015-2022 | 80,000-130,000 km |
3. Main Causes (Honda TechLine Ranking)
A. Mechanical Problems (50%)
- Timing chain stretch (especially 1.5L Turbo)
- Hydraulic tensioner wear
- VTC system failure
B. Electrical Failures (40%)
- Faulty CMP sensor (Honda ref. 37550-RPY-003)
- Connector problem (oxidized terminals)
- Damaged wiring near exhaust manifold
C. Other Causes (10%)
- Inadequate engine oil (incorrect viscosity)
- Insufficient oil pressure
- ECU problem (requires reprogramming)
4. Official Honda Diagnostic Procedure
Step 1 – Initial Checks
- Check oil level and quality (5W-30 recommended)
- Visually inspect CMP connector (located on cylinder head)
- Check associated codes (P0341, P0017, etc.)
Step 2 – Advanced Tests
- CMP resistance: 450-1000Ω (depending on model)
- CKP signal: 0.3-5V AC during startup
- VTC test with HDS (check advance angle)
Step 3 – Mechanical Check
- Check timing marks alignment
- Measure chain stretch (special Honda tool)
- Check tensioner operation
5. Engine-Specific Solutions
For 1.5L Turbo (L15B)
- Complete chain kit (Honda ref. 14400-59B-010)
- Revised CMP sensor (2021+ version)
- Software update (TSB 21-041)
For 2.0L Turbo (K20C)
- VTC actuator inspection
- Seal replacement
- ECU reprogramming
For 1.8L (R18)
- CMP sensor replacement
- VTEC solenoid cleaning
- Oil pump verification
6. Key Technical Data
- Minimum oil pressure: 30 psi (hot idle)
- VTC tolerance: ±5° max
- Chain interval: 150,000 km (but check at 100,000 km)
7. Repair Costs
| Service | Cost (EUR) | Warranty |
|---|---|---|
| Sensor replacement | 150-300€ | 2 years |
| Complete chain kit | 800-1,500€ | 1 year |
| Reprogramming | 80-200€ | 90 days |
8. Common Mistakes
- Using non-OEM parts (failure rate >40%)
- Neglecting oil pump check
- Forgetting to reset ECU after repair
9. Technical FAQ
Q: Can I drive with this code?
→ Not recommended – Risk of damaging VTC
Q: How to check chain without disassembly?
- Engine at TDC #1
- Measure VTC angle with HDS
- If >8°, replacement needed
Q: Recommended prevention?
- Strict oil changes every 10,000 km max
- Exclusive use of Honda Ultra oil
- Annual inspection from 80,000 km
10. Conclusion
To solve P1392 on Honda:
- Complete diagnosis with HDS tool
- Thorough timing system check
- Exclusive use of Honda parts
⚠️ Important: Recent Turbo engines require special attention to oil quality and pressure. Always consult a certified Honda technician for this type of fault.