P1705 obd2 code and testing tps voltage ciccuit

P1705 obd2 code describes the operation of the tps sensor and its wiring circuit. Included is a list of obd2 codes given below

P1705    excessively high or low voltage input from TPS sensor

When testing a tps sensor code like this P1705 code, check the signal wire voltage for any signs of glitch. This can be done manually without running the engine. With key on engine off, monitor the signal wire voltage from idle (close throttle) and up to high idle (WOT or wide open throttle position) by moving the throttle linkage. The transistion from idle to high idle should be reflected in the voltage readings like a gradually increasing pattern. If there is a sudden change or a glitch, replace the TPS sensor. Please note also that a regular tps sensor usually has 3 wires: a voltage reference wire, a signal wire and a ground wire. Except the signal wires, the other 2 wires should have steady voltage readings regardless of the throttle linkage position.

For advance testing, garages can usually monitor the voltage of the TPS signal wire while the engine is running. Using a special scanner, the voltage can be watched while cruising in order to see if the value of the signal wire voltage will change. This is particularly important if the code P1705 only appears intermittently. For precaution, check the integrity of the signal wires from the TPS sensor plug-in up to 12 inches away. To do this, splice the wiring harness and check if there is any short (bump) in the signal wire which could be rubbing metal before this code came on.

tps sensor test
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CODE     Meaning or Description

P207F     Engine Quality performance
P2080     Engine Exhaust Gas Temp Sensor ckt
P2081     Engine Exhaust Gas Temp Sensor ckt
P2082     Engine Exhaust Gas Temp Sensor ckt
P2083     Engine Exhaust Gas Temp Sensor ckt
P2084     Engine Exhaust Gas Temp Sensor ckt
P2085     Engine Exhaust Gas Temp Sensor ckt
P2086     Engine Exhaust Gas Temp Sensor ckt
P2087     Engine Exhaust Gas Temp Sensor ckt
P2088     Engine Cam Position Actuator Cntl
P2089     Engine Cam Position Actuator Cntl
P208A     Fuel Pump Cntl ckt
P208B     Fuel Pump Cntl
P208C     Fuel Pump Cntl ckt
P208D     Fuel Pump Cntl ckt
P208E     Engine fuel Injector
P208F     Engine fuel Injector
P2090     Engine Cam Position Actuator Cntl
P2091     Engine Cam Position Actuator Cntl
P2092     Engine Cam Position Actuator Cntl
P2093     Engine Cam Position Actuator Cntl
P2094     Engine Cam Position Actuator Cntl
P2095     Engine Cam Position Actuator Cntl
P2096     Catalytic converter Fuel Trim
P2097     Catalytic converter Fuel Trim
P2098     Catalytic converter Fuel Trim
P2099     Catalytic converter Fuel Trim
P209A     Engine Air Press Sensor ckt
P209B     Engine Air Press Sensor ckt
P209C     Engine Air Press Sensor ckt
P209D     Engine Air Press Sensor ckt
P209E     Engine Air Press Sensor ckt
P209F     Engine Fuel Tank Heater Cntl
P20A0     Emission Purge Cntl Valve
P20A1     Emission Purge Cntl Valve
P20A2     Emission Purge Cntl Valve ckt
P20A3     Emission Purge Cntl Valve ckt
P20A4     Emission Purge Cntl Valve
P20A5     Emission Purge Cntl Valve
P20A6     Air Pressure Control Valve ckt
P20A7     Air Pressure Control Valve
P20A8     Air Pressure Control Valve ckt
P20A9     Air Pressure Control Valve ckt
P20AA     Air Pressure Control Valve
P20AB     Air Pressure Control Valve
P20AC     Fuel Metering Temp sensor ckt
P20AD     Fuel Metering Temp sensor ckt
P20AE     Fuel Metering Temp sensor ckt
P20AF     Fuel Metering Temp sensor ckt
P20B0     Fuel Metering Temp sensor ckt
P20B1     Engine Heater Coolant Cntl valve ckt
P20B2     Engine Heater Coolant Cntl valve ckt
P20B3     Engine Heater Coolant Cntl valve ckt
P20B4     Engine Heater Coolant Cntl valve ckt
P20B5     Fuel Metering Heater Cntl ckt
P20B6     Fuel Metering Heater Cntl
P20B7     Fuel Metering Heater Cntl ckt
P20B8     Fuel Metering Heater Cntl ckt
P20B9     Engine Heater A Cntl ckt


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