O2 sensor heater circuit malfunction (bank 1 sensor 1). You probably have a burned out Bank 1 Sensor 1 O2 sensor. Also check the wiring at the sensor for damage.
The PO135 error code on a Ford F150 indicates a problem with the oxygen sensor circuit for the bank 1 sensor 1. To fix this issue, first, check the wiring and connectors for any damage or corrosion. If they are in good condition, replace the oxygen sensor itself. After replacing the sensor, clear the error code and take the vehicle for a test drive to ensure the issue is resolved.
change your o2 sensor
replace cat
Start with replacing the thermostat.
I've got a better question, why is this question in the Chevy venture forum ?
you stick some plastic explosives on it and run
Start with looking for a vacuum leak.
The P0135 code for a Volvo V70 indicates a problem with the oxygen sensor heater circuit in Bank 1. To fix this, start by inspecting the wiring and connectors leading to the upstream oxygen sensor for any damage or corrosion. If the wiring is intact, you may need to replace the faulty oxygen sensor itself. After replacement, clear the code and perform a test drive to ensure the issue is resolved.
pull the intake and fix the secondary runners
P0121 Throttle/Pedal Position Sensor A Circuit Range/Performance IvryJade writes: Yes, but how do I fix it?
Trouble code P1111 means: IAT Sensor Circuit Intermittent Voltage High
A loose gas cap will cause this. Check that first then have a local parts store such as Advance clear the code for you.