Ethereum Transaction Error Troubleshooting Guide
12 ERROR CODES · GAS OPTIMIZATION · ALTERNATIVES| Error Code | Cause | Fix | |
|---|---|---|---|
| OUT_OF_GAS | TX used more gas than the limit set | Increase gas limit. Complex contract interactions often need 2-3x estimate. Full table → | 🔒 |
| GAS_ESTIMATION | Node cannot simulate the TX | Often a revert in a contract call. Check calldata, approve tokens first. Full table → | 🔒 |
| NONCE_TOO_LOW | TX nonce below current wallet nonce | Reset nonce in wallet, clear pending TXs. Full table → | 🔒 |
| REPLACEMENT_UNDERPRICED | Speed-up TX has insufficient gas price | Must increase gas by at least 10% over original. Full table → | 🔒 |
| INSUFFICIENT_FUNDS | Wallet lacks ETH for gas + value | Top up wallet or reduce TX value. Full table → | 🔒 |
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