P2163 — Throttle/pedal position sensor A maximum-stop response — performance fault

P2163 concerns throttle/pedal position sensor A maximum-stop response. The monitor reports that the named control function does not meet its expected operating behavior. The monitor concerns the maximum-stop position relationship. It should not be interpreted simply as a high-voltage circuit code.

Affected system: Electronic throttle and pedal control

Symptoms

• Warning light may illuminate
• Related system function may be impaired
• Vehicle-specific symptoms vary

Possible causes

• Implausible sensor or switch signal, poor ground, connector corrosion, or wiring damage
• Related wiring, connector, power or ground fault
• Vehicle-specific mechanical or control issue

What to check

• Record stored and pending codes and freeze-frame data
• Compare the named sensor or switch signal with actual operating conditions; inspect the connector, reference supply, ground and harness.
• Confirm measured values against the vehicle service information
• Retest under the conditions that set the code
• Compare the named sensor or switch signal with actual operating conditions; inspect the connector, reference supply, ground and harness.
• Repair the verified cause and confirm the code does not return

Also written as: P2163-00, P216300 (some scan tools add the fault-type byte, e.g. -00).