Multi-code OBD2 diagnosis
Enter all the codes your scanner showed, not just the first one. We give you the overall severity, whether you can keep driving, the order in which to check them and how they relate to each other.
Summary
- Overall severity
- High
- Can I keep driving?
- Yes, but with caution
- Estimated cost
- $30 to $200
- Codes analyzed
- 1 of 1
The order below is the recommended one: first the codes that can cause the others. After each repair, clear the codes and check which ones come back.
Order of inspection
P2309 Ignition Coil D Primary Control Circuit Low High
The P2309 code means the computer sees low voltage in the control circuit of ignition coil D, either a short to ground or a missing supply. It can cause misfires on one or two cylinders, jerking and loss of power. You can drive short distances with caution, but a cylinder with no spark can damage the catalytic converter.