What does this code mean?
The wording below belongs to the named make and communication. Match the complete code, reporting module, model year and engine before applying it.
A code identifies a detected condition, not a part that must automatically be replaced.
Manufacturer wording
Source wording can vary by vehicle and suffix. It is shown as written, not as a universal diagnosis.
P2646A Rocker Arm Actuator System Performance or Stuck Off (Bank 1)P2646A Rocker Arm Actuator System Performance or Stuck Off [Bank 1]Manufacturer communications
9Original wording in English
TOYOTA
Reported code forms P2646
TSB: Some 2018 - 2019 model year C-HR (equipped with a 3ZR-FAE engine) and 2020 model year Corolla (equipped with a 2ZR-FAE engine) vehicles may exhibit a MIL ON condition with one or more of the following Diagnostic…
HONDA
Reported code forms P2646
"SERVICE BULLETIN - THE MIL COMES ON WITH ONE OF THESE DTCS: • P2646/P2651 (ROCKER ARM OIL PRESSURE SWITCH CIRCUIT LOW VOLTAGE). • P2647/P2652 (ROCKER ARM OIL PRESSURE SWITCH CIRCUIT HIGH VOLTAGE). NOTE: THE SYMPTOM MAY…
TOYOTA
Reported code forms P2646
TSB: Some 2014 model year Corolla vehicles equipped with the 2ZR-FAE engine may exhibit a MIL "ON" condition with either one or both of the following Diagnostic Trouble Codes (DTCs): ? P2646 ? A Rocker Arm Actuator…
TOYOTA
Reported code forms P2646
TSB: Some 2014 model year Corolla vehicles equipped with the 2ZR-FAE engine may exhibit a MIL "ON" condition with either one or both of the following Diagnostic Trouble Codes (DTCs): * P2646 - A Rocker Arm Actuator…
TOYOTA
Reported code forms P2646
TSB: Some 2014 model year Corolla vehicles equipped with the 2ZR-FAE engine may exhibit a MIL ?ON? condition with either one or both of the following Diagnostic Trouble Codes (DTCs): ? P2646 ? A Rocker Arm Actuator…
TOYOTA
Reported code forms P2646
Some 2014 model year Corolla vehicles equipped with the 2ZR-FAE engine may exhibit a MIL ?ON? condition with either one or both of the following Diagnostic Trouble Codes (DTCs):. P2646 ? A Rocker Arm Actuator System…
Check vehicle applicability
43A listed vehicle is a research lead. Confirm the engine, production range and software in the manufacturer's information.
| Make | Model | Model year |
|---|---|---|
| Honda | ACCORD | 2012 |
| Honda | ACCORD | 2011 |
| Honda | ACCORD | 2010 |
| Honda | ACCORD | 2009 |
| Honda | ACCORD | 2008 |
| Honda | ACCORD | 2007 |
| Honda | ACCORD | 2006 |
| Honda | ACCORD | 2005 |
| Honda | ACCORD | 2004 |
| Honda | ACCORD | 2003 |
| Honda | CIVIC | 2013 |
| Honda | CIVIC | 2012 |
Before replacing a part
Record codes and freeze-frame data. Check battery condition, related codes and visible wiring or hose damage. Follow the vehicle's diagnostic procedure and test results before replacing parts.
Can I keep driving?
A code alone cannot establish whether driving is safe. A flashing malfunction light, severe shaking, overheating, oil-pressure warning or loss of braking or steering needs prompt attention. Stop in a safe place and seek assistance when control or engine safety is affected. Follow the vehicle handbook.