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
- $150 to $1,500
- 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
P0743 Torque Converter Clutch Circuit Electrical High
The P0743 code means the electrical circuit of the solenoid that locks the torque converter is not responding the way the computer expects. Unlike P0740, which judges how well the lockup performs, this code points straight at the circuit: resistance out of range, a broken wire or a connector with a bad contact. Check the pass-through connector for fluid before you replace anything.