Description
Function of the Intake Manifold
The intake manifold distributes air (or air-fuel mixture) evenly to each cylinder through individual runners. Its design is engineered to optimise airflow velocity and distribution for maximum power and efficiency. A cracked or leaking intake manifold causes vacuum leaks, uneven cylinder fuelling, rough idle, misfires, and poor performance.
Common Diagnostic Trouble Codes (DTCs)
A generic OBD reader shows the 5-character code; the GWM system stores the 7-character extended form shown in brackets.
- P2100 [P210000] — Throttle actuator motor drive circuit — open
- P2102 [P210200] — Throttle actuator motor drive circuit — short to ground
- P2127 [P212700] — Throttle position sensor circuit — low / open
- P2128 [P212800] — Throttle position sensor circuit — short to power
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