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What P1128 means: Throttle Control Motor Circuit Short. It is a throttle code.

Does LockNCal handle this? No — throttle faults aren’t part of our mobile safety-systems service, so this one is best diagnosed by a qualified repair shop. If the same scan also shows airbag/SRS, ADAS, or key & immobilizer codes, those we do handle — call or text (469) 277-7277.

Because P1128 is a throttle fault, the symptoms and the correct repair depend on that system. Have the code confirmed with a diagnostic scan and repaired by a qualified technician before it causes further problems.