P2013 – Intake Manifold Runner Control Circuit High Bank 2

P2013 is a powertrain Diagnostic Trouble Code (DTC) that points to an intake air management signal or circuit plausibility concern as interpreted by the Powertrain Control Module (PCM). In many vehicles, this is commonly associated with the Intake Manifold Runner Control (IMRC) system and its position feedback, but the exact monitored component and test conditions can vary by make, model, and year. Because of that, you confirm the meaning by checking the scan tool’s code description, freeze-frame data, and by performing basic electrical tests on power, ground, and the related signal circuit(s) before replacing parts.

What Does P2013 Mean?

SAE J2012 defines the structure and formatting of DTCs, and standardized DTC descriptions are published in the SAE J2012-DA digital annex. For P2013 specifically, the standardized, commonly used wording in many service references is tied to the intake manifold runner control position sensing signal being implausible for the commanded state (often described as a “high” or out-of-range signal depending on the strategy), but the exact component-level interpretation is not universal across all makes and years.

This code is shown without a hyphen suffix, meaning it is presented without a Failure Type Byte (FTB). If an FTB were present (for example, a “-xx” suffix on some platforms), it would further qualify the fault subtype (such as signal range, plausibility, or other failure mode) while the base code still identifies the general monitored function. What makes P2013 distinct is that it’s typically set when the PCM sees a runner/air-control feedback signal that does not correlate with a commanded position or expected operating conditions, rather than a simple “no signal” condition.

Quick Reference

• Code: P2013
• System: Powertrain (intake air management plausibility)
• Commonly associated with: Intake Manifold Runner Control (IMRC) actuator, IMRC position sensor (or integrated feedback), wiring/connectors, mechanical runner linkage/binding
• What you’ll notice: Reduced power, inconsistent throttle response, possible roughness, possible illumination of the Malfunction Indicator Lamp (MIL)
• Primary confirmation method: Compare commanded vs actual/feedback with a scan tool, then verify power/ground/reference and signal integrity with a multimeter/scope
• Risk level: Usually drivability-related; can become more severe if the runner mechanism binds or the signal becomes erratic

Real-World Example / Field Notes

In the bay, P2013 often shows up after unrelated under-hood work where a harness was tugged, a connector was left partially latched, or a vacuum line/duct was disturbed near the intake. On vehicles where the runner actuator and position feedback are integrated, a slightly corroded connector pin or a compromised ground can push the feedback voltage out of the expected window, especially during snap-throttle events when the PCM commands a runner change. Another pattern is carbon/oil buildup causing runner plates to stick; the PCM commands movement, but the feedback doesn’t track smoothly, which looks like a plausibility issue rather than a total electrical failure. The fastest wins typically come from verifying the reference voltage and ground quality under load, then watching the feedback signal for dropouts while gently manipulating the harness and runner linkage.

Symptoms of P2013

• Check Engine Light illuminated, often after a cold start or heavy acceleration.
• Reduced power or sluggish acceleration, especially in the low-to-mid RPM range.
• Hesitation during tip-in throttle or when merging/passing.
• Rough idle or unstable idle speed on some engines where runner position affects airflow at idle.
• Poor fuel economy from airflow not matching the commanded intake runner strategy.
• Driveability inconsistency where the symptom comes and goes with heat, moisture, or vibration.
• Failed emissions test due to the stored fault and potential mixture control side effects.

Common Causes of P2013

Most Common Causes

• Intake Manifold Runner Control (IMRC) position sensor signal biased high (sensor internal fault or contamination), where the feedback voltage stays higher than expected for the commanded position.
• Signal circuit short to voltage on the IMRC position/feedback line (chafed harness, rubbed-through insulation, water intrusion at a connector).
• Corroded, spread, or pushed-out terminals at the IMRC actuator or position sensor connector causing abnormal high signal or unstable reference/signal relationship.
• Open or high-resistance sensor ground causing the signal to read artificially high (ground offset), especially under load.

Less Common Causes

• 5-volt reference issue affecting multiple sensors (reference pulled high or floating due to wiring damage); confirm by checking reference stability under key-on and engine-running conditions.
• IMRC actuator mechanical binding or linkage sticking that drives the feedback to an implausible high position compared to command (varies by design and is not always present).
• Powertrain Control Module (PCM) possible internal processing or input-stage issue, considered only after all external wiring, power, ground, reference, and signal integrity tests pass.

Diagnosis: Step-by-Step Guide

Tools you’ll want: an OBD-II scan tool with live data and bi-directional controls, a digital multimeter (DMM), back-probe pins or piercing probes, a wiring diagram for your exact vehicle, a handheld vacuum pump (if vacuum-actuated), a smoke machine (optional for intake leaks), basic hand tools, electrical contact cleaner, and a good light/mirror for harness inspection.

1. Verify the DTC and capture freeze-frame data (RPM, load, coolant temp, throttle angle). Confirm P2013 returns after clearing and a short drive; intermittent faults may require a wiggle test.
2. On the scan tool, view IMRC command versus IMRC position/feedback (names vary). A “signal high” condition usually shows the feedback stuck near the top of its range or implausibly high relative to command.
3. Key on, engine off: check the 5-volt reference at the IMRC position sensor (if equipped) with a DMM. You’re looking for a stable reference near 5 V; an abnormal value suggests a reference or shared-circuit issue.
4. Check sensor ground integrity with a voltage-drop test: measure voltage between sensor ground and battery negative while the circuit is loaded (command the actuator if possible). A noticeable drop indicates ground resistance that can bias the signal high.
5. Measure the signal wire voltage. Compare it to expected behavior as you command IMRC movement with bi-directional control. If the signal stays high regardless of command, suspect a short to voltage, ground offset, or sensor fault.
6. Perform a harness and connector inspection: look for oil saturation, water intrusion, broken locks, terminal corrosion, or rubbed-through loom near the intake manifold and engine movement points. Repair any found damage and re-test.
7. If the system is vacuum-actuated, verify vacuum supply and control integrity (hoses, solenoid operation). A stuck actuator can create a mismatch, but P2013 is typically set by an electrical “high signal” condition, so keep the focus on the feedback circuit.
8. Unplug the IMRC position sensor/actuator connector and re-check the signal circuit at the PCM side. If the signal remains high unplugged, the signal wire is likely shorted to voltage or there’s a module input bias issue.
9. Check continuity and isolation: with power off, ohm the signal wire end-to-end and test for shorts to power/ground. Flex the harness while testing to reveal intermittent faults.
10. Only after wiring, power, ground, and reference test good, evaluate the actuator/sensor assembly and finally consider PCM input-stage concerns. Confirm by substituting a known-good signal (when service information allows) or verifying the feedback line responds correctly with a verified-good component.

Professional tip: Don’t replace an IMRC actuator or sensor just because live data reads “high”—first prove whether the high reading is real (signal wire actually high) or artificial (bad ground/reference). A quick voltage-drop test on the sensor ground under an active command often exposes the root cause faster than swapping parts.

Possible Fixes & Repair Costs

Costs depend on access to the intake system, corrosion severity, and whether the problem is wiring, a sensor/actuator, or a mechanical restriction. As a guide: low $0–$80 (inspection, connector cleaning, minor harness repair), typical $150–$450 (repairing damaged wiring or replacing a commonly associated Intake Manifold Runner Control actuator/position sensor when testing proves the signal is being driven high), and high $600–$1,500+ (intake manifold service/replacement if mechanical binding is confirmed, or control module diagnostics when all external circuits test good).

Replace or repair parts only when your tests justify it. If you find a signal wire shorted to voltage (signal reads near battery voltage with the sensor unplugged), repair the harness/connector. If the 5-volt reference is elevated or unstable at multiple sensors, trace the reference circuit and isolate the shorted branch before replacing anything. If the actuator/sensor outputs high despite correct power/ground and a valid commanded movement, replacement may be justified. Consider a possible internal processing or input-stage issue in the Engine Control Module (ECM) only after power, grounds, and the signal/return circuits pass integrity tests and the runner mechanism moves freely.

Can I Still Drive With P2013?

You can often drive short distances with P2013, but you should treat it as a driveability and emissions risk. Because “signal high” can indicate a wiring fault that may worsen, you may experience reduced power, unstable idle, hesitation, or poor fuel economy. If the engine is running rough, stalling, or the throttle response feels unpredictable, avoid highway merging and towing. If the light is flashing or the engine misfires heavily, stop driving and diagnose it first.

What Happens If You Ignore P2013?

Ignoring P2013 can lead to chronic poor performance, higher fuel consumption, and increased emissions. If the runner system is stuck or the ECM is receiving a falsely high signal, the engine may operate with incorrect airflow strategy, potentially causing carbon buildup and long-term driveability complaints. A persistent electrical fault can also spread damage to connectors or wiring insulation and make later repairs more expensive.

Related Intake Manifold Codes

Compare nearby intake manifold trouble codes with similar definitions, fault patterns, and diagnostic paths.

• P2010 – Intake Manifold Runner Control Circuit High Bank 1
• P2022 – Intake Manifold Runner Position Sensor/Switch Circuit High Bank 2
• P2017 – Intake Manifold Runner Position Sensor/Switch Circuit High Bank 1
• P2078 – Intake Manifold Tuning (IMT) Valve Position Sensor/Switch Circuit High
• P2014 – Intake Manifold Runner Position Sensor/Switch Circuit Bank 1
• P2012 – Intake Manifold Runner Control Circuit Low Bank 2

Key Takeaways

• P2013 is a Powertrain code commonly associated with an Intake Manifold Runner Control signal that is high, but exact implementation can vary by make/model/year.
• A “signal high” result is usually proven with voltage measurements (reference, ground integrity, and signal behavior), not by guessing parts.
• Start with connector/harness inspections and confirm whether the high reading remains with the sensor/actuator unplugged.
• Verify runner movement and linkage freedom before condemning an intake manifold or actuator.
• Suspect an ECM input-stage issue only after external circuits and mechanical operation test good.

Vehicles Commonly Affected by P2013

P2013 is often reported on vehicles that use variable intake runner systems for torque and emissions control. You’ll commonly see it on some Volkswagen/Audi applications, certain Ford engines, and some GM platforms, depending on engine family and year. It tends to show up where the runner actuator and position feedback live in hot, vibration-prone areas, and where harness routing or intake contamination can affect signal integrity and runner movement.

FAQ

Can a bad battery or charging issue trigger P2013?

Yes, low system voltage or unstable charging can create sensor reference and signal anomalies that look like a “signal high” or cause implausible readings during self-tests. Check battery state of charge, charging voltage, and voltage drop on engine grounds. If system voltage is erratic, fix that first, clear the code, and re-test. Stable power and grounds are required before you can trust intake runner signal measurements.

Is P2013 always the intake manifold runner control actuator?

No. P2013 points to a “signal high” condition in the intake runner control feedback/command circuit family, and the exact monitored circuit can vary by make/model/year. A high signal can come from a short to voltage, a poor ground, a skewed 5-volt reference, water intrusion in a connector, or a sensor that outputs high. Confirm by checking reference voltage, ground integrity, and signal voltage with the connector plugged and unplugged.

Can I diagnose P2013 without replacing parts?

Yes. Use test-driven checks: scan tool data to see if the runner position reading is stuck high, then back it up with a multimeter or oscilloscope. Measure the signal voltage, 5-volt reference, and ground voltage drop under load. Unplug the sensor/actuator and see whether the signal stays high (suggesting a harness short) or drops (suggesting sensor/actuator influence). Verify runner movement to rule out mechanical binding.

Will cleaning the throttle body or intake fix P2013?

Sometimes, but only when you’ve confirmed a mechanical restriction or sticking runner mechanism. Intake deposits can contribute to runner linkage drag or an actuator that can’t achieve commanded position, which may distort feedback signals. However, P2013 is specifically about a “signal high” condition, so you still need electrical checks first. If electrical tests are normal and movement is restricted, cleaning or servicing the intake runner mechanism can be justified.

Can a control module be the cause of P2013?

It’s possible, but it should be low on your list. Consider a possible Engine Control Module (ECM) input-stage or processing issue only after you’ve verified clean power and grounds, correct reference voltage, a healthy signal return path, and a good harness (no shorts to voltage). If an external signal is proven correct with a meter/scope but the scan tool still shows a falsely high value, module-side diagnosis becomes reasonable.