P200A: Intake Manifold Runner Performance (Bank 1) (Meaning, Causes, Fixes)

What P200A means

Many engines have flaps inside the intake manifold, called an intake manifold runner control (IMRC) system, that the powertrain control module (PCM) moves to change how air flows into the cylinders. OBD-Codes.com explains that the flaps on one bank are usually attached to a single pivot rod running through the intake ports and moved together by one actuator, with each bank having its own rod and actuator. The PCM commands a position, then watches engine sensor data to see whether the intended effect happened; if it finds the system cannot be controlled effectively, it stores P200A and may turn on the check engine light (OBD-Codes.com). RepairPal says the code is set when the intake manifold runner does not operate as requested. OBD-Codes.com describes P200A as a generic OBD-II code for 1996 and newer vehicles (it names Hyundai, Kia, Mercedes-Benz, Sprinter and Vauxhall), with repair steps that vary by year, make, model and engine. Bank 1 is the side of the engine with cylinder 1; inline engines have only Bank 1. Note on sources: the two sources describe the system's purpose differently. OBD-Codes.com says airflow is restricted at low RPM to reduce emissions and the flaps create a swirl at higher RPM to improve fuel atomization and performance, while RepairPal says the runner lets more air flow through the intake at higher RPM. RepairPal's title for P200A also leaves out the bank, while OBD-Codes.com names Bank 1. Designs vary by maker, so check your vehicle's service information.

Severity: can I keep driving?

Drive with caution, fix soon

Get it diagnosed soon. RepairPal rates P200A Moderate, meaning it may not threaten safety or drivability right away but should still be checked within a reasonable time. OBD-Codes.com says it should not be classed as severe but should be fixed at the earliest convenient opportunity, and notes that stored runner control codes typically leave the intake port flaps wide open. Expect weaker performance and lower fuel economy until it is fixed. If the engine hesitates badly, stumbles, or other warning lights come on, have it checked sooner.

Common symptoms

• Check engine light on (OBD-Codes.com)
• Reduced engine performance (OBD-Codes.com)
• Lower fuel economy (OBD-Codes.com)
• Hesitation when accelerating (OBD-Codes.com)
• Stumble at idle (OBD-Codes.com)
• Lean or rich exhaust codes stored along with P200A (OBD-Codes.com)

Likely causes

Roughly most to least common, based on the sources below. Your vehicle may differ.

1. Defective IMRC actuator (OBD-Codes.com, RepairPal)
2. Broken, collapsed or restricted IMRC vacuum lines, or a faulty IMRC vacuum supply actuator (OBD-Codes.com, RepairPal)
3. Broken or worn IMRC linkage or bushings (OBD-Codes.com)
4. Open or shorted IMRC circuits or connectors (OBD-Codes.com)
5. Bad IMRC sensor or another engine sensor (OBD-Codes.com)
6. PCM failure or a programming error, which OBD-Codes.com says to suspect only after everything else is ruled out (RepairPal, OBD-Codes.com)

Diagnostic steps you can do

1. Read all stored codes and freeze frame data and write them down before clearing, in case the fault is intermittent (OBD-Codes.com).
2. If mass airflow (MAF), manifold pressure (MAP) or intake air temperature (IAT) codes are also stored, fix those first (OBD-Codes.com).
3. Check for technical service bulletins (TSBs) matching your vehicle, engine, codes and symptoms (OBD-Codes.com).
4. Visually inspect the runner control linkage, vacuum lines and hoses, wiring and connectors; repair worn or damaged hardware before going further (OBD-Codes.com).
5. Clear the code and test drive to see whether it comes back (OBD-Codes.com).

Typical fixes

• Repair or replace broken or worn runner linkage or bushings
• Replace broken, collapsed or restricted vacuum lines
• Repair open or shorted wiring or connectors in the runner control circuit
• Replace a failed IMRC actuator, vacuum supply actuator, control solenoid or runner sensor if testing confirms it
• Repair or reprogram the PCM only after all other causes are ruled out

Repair costs vary widely by vehicle, region, parts brand and shop, so we don't quote prices. Get a written estimate after diagnosis.

Related codes

• P2006 Intake Manifold Runner Control Stuck Closed Bank 1
• P2004 Intake Manifold Runner Control Stuck Open (Bank 1)
• P2015 Intake Manifold Runner Position Sensor/Switch Circuit Range/Performance (Bank 1)
• P2016 Intake Manifold Runner Position Sensor/Switch Circuit Low Bank 1
• P2017 Intake Manifold Runner Position Sensor/Switch Circuit High Bank 1

Also listed in this guide:

All Intake manifold runner codes (P2004–P2019) →

FAQs

Sources

1. OBD-Codes.com: P200A Intake Manifold Runner Performance Bank 1 (Stephen Darby, ASE)
2. RepairPal: P200A Intake Manifold Runner Performance (rated Moderate)