Originally Posted by philmc
Need help.....I have a 2001 4.0 6 cyl. took it to have emissions test and got a P-0460,P-0135,P-1401,P-1131 codes. Any bright persons out there that might enlighten me? Thanks in advance
0135: O2 sensor bank 1 sensor 1 heater fault
0140: O2 sensor bank 1 sensor 2 circuit fault
1401: DPF Circuit High Voltage
1131: Same as 0135
I think you have some wiring problems.