OBD-II Trouble Code Description for P0122 Land Rover

Throttle/Pedal Position Sensor/Switch “A” Circuit Low

What does this mean?

OBD2 Code P0122 Land Rover definition:
A P0122 Land Rover code means that the the car’s computer has detected that the TPS (throttle position sensor) is reporting too low a voltage. On some vehicles that lower limit is 0.17 – 0.20 volts (V). Did you adjust it when you installed it? If the signal value is less than .17V then the PCM sets this code. Could be an open or a short to ground in the signal circuit. Or you may have lost the 5Volt reference voltage.

Symptoms

Possible sumptoms of OBD code P0122 Land Rover
Rough or low idle Stalling Surging No/little acceleration other symptoms may also be present

Causes

Possible causes of OBD code P0122 Land Rover
A code P0122 Land Rover may mean that one or more of the following has happened: TPS not mounted securely TPS circuit short to ground or another wire Faulty TPS Damaged computer (PCM)

Possible Solutions

Some recommended troubleshooting and repair steps are: Carefully check the throttle position sensor (TPS), wiring connector, and wiring for breaks, etc. Repair or replace as necessary Check the voltage at the TPS (refer to a service manual for your vehicle for specific information). If the voltage is too low that is indicative of a problem. Replace if necessary. If recently replaced the TPS may need to be adjusted. On some vehicles the installation instructions call for the TPS to be properly aligned or adjusted, consult a repair manual for specifics. If there are no symptoms at all, the problem may be intermittent and clearing the code may resolve the issue temporarily. If this is the case then you should definitely check the wiring to be sure it’s not rubbing on anything, grounding, etc. The code may come back.

Related Codes

P0120 Land Rover P0121 Land Rover P0123 Land Rover P0124 Land Rover