P0122 Code

Description
TP SENSOR CIRCUIT LOW VOLTAGE

Throttle Position (TP) sensor measures amount of throttle
opening. PCM uses TP sensor information for fuel delivery
calculations. TP sensor readings during acceleration are much higher
than those during deceleration or idle.

Symptoms

• Rough or low idle
• Stalling
• Surging
• No/little acceleration
• Stuttering

Causes

• TPS not mounted properly
• TPS plug or wires damaged
• Defective TPS
• Damaged computer (PCM)

Possible Solutions

• Inspect the throttle position sensor (TPS), wiring connector, and wiring for breaks, or loose connectins. Repair or replace if needed
• Test the TPS for proper operation.
• Check mounting screws to ensure they are tight
• Replace TPS