Engine timing codes persist after replacing key parts.
Toyota Corolla 2018 61046 miles
Summary of Issue:
The vehicle has consistently reported the following OBD-II codes:
• P0012 (Permanent) – Camshaft Position A (Intake) Timing Over-Retarded
• P0014 (Pending + Permanent) – Camshaft Position B (Exhaust) Timing Over-Advanced
• P0015 (Permanent) – Camshaft Position B (Exhaust) Timing Over-Retarded
• P0368 (New) – Camshaft Position Sensor B Circuit High (Exhaust, Bank 1)
⸻
Actions Taken:
1. Engine oil changed (Rymax Apollo FE-RC 0W-20 full synthetic). 2. Both VVT solenoids replaced (intake and exhaust). 3. Both camshaft position sensors replaced (intake and exhaust).
⸻
Current Status:
• Despite part replacements, all previous timing-related codes remain active or permanent. • A new code (P0368) has appeared, indicating a potential issue with the exhaust camshaft sensor circuit. • This suggests the problem may not be with the replaced components, but rather with:
• Faulty wiring/connectors
• Incompatible or defective aftermarket sensors
• Internal timing issues (e. G. , stretched or misaligned timing chain)
• ECU misinterpretation due to incorrect signal input
The vehicle has consistently reported the following OBD-II codes:
• P0012 (Permanent) – Camshaft Position A (Intake) Timing Over-Retarded
• P0014 (Pending + Permanent) – Camshaft Position B (Exhaust) Timing Over-Advanced
• P0015 (Permanent) – Camshaft Position B (Exhaust) Timing Over-Retarded
• P0368 (New) – Camshaft Position Sensor B Circuit High (Exhaust, Bank 1)
⸻
Actions Taken:
1. Engine oil changed (Rymax Apollo FE-RC 0W-20 full synthetic). 2. Both VVT solenoids replaced (intake and exhaust). 3. Both camshaft position sensors replaced (intake and exhaust).
⸻
Current Status:
• Despite part replacements, all previous timing-related codes remain active or permanent. • A new code (P0368) has appeared, indicating a potential issue with the exhaust camshaft sensor circuit. • This suggests the problem may not be with the replaced components, but rather with:
• Faulty wiring/connectors
• Incompatible or defective aftermarket sensors
• Internal timing issues (e. G. , stretched or misaligned timing chain)
• ECU misinterpretation due to incorrect signal input
6 reports
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