U1262 Diagnostic Trouble Code Discussion for August 2013
Data Circuit Malfunction
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| Help Request | Posted | |
| 1999 Ford F-150 Lariat 5.4L Poor Idle Quality, MIL Lamp on VIN: 1FTRX18LXX U1262: Scp data fault for J1850 Bus. Check engine light is on for bank 1 only running lean. Bank 2 is not indicated as too lean but LTFT is 19, LTFT on B1 is 25+. No vacuum leaks found. It seems only when vehicle engine cold the problem occurs. At warm idle, the STFT are always 0 +/- 3%. Odometer... |
August 15, 2013 |
