P1487 — SCP

How much does it cost to fix P1487?

Control module repair — $300–$1,000; Repair wiring or connectors — $80–$250; Replace the faulty sensor or actuator — $150–$500. Exact cost depends on the root cause, your vehicle and local labor rates — a proper diagnosis is the cheapest first step.

What are the symptoms of P1487?

Drivers most often notice: Check Engine Light on, possible limp mode depending on the affected component, the affected system operates intermittently or not at all, increased fuel consumption in some cases.

What is the most common cause of P1487?

The most common causes are: open or shorted wiring in the circuit, faulty sensor or actuator of the affected circuit, corroded, loose or damaged connector.

Will P1487 clear itself?

Sometimes P1487 clears after a few drive cycles if the fault was intermittent — for example a loose connector or a tank of bad fuel. The underlying cause usually remains, so the code tends to return. Clear it once; if it comes back, diagnose rather than erase it repeatedly.

What does OBD2 code P1487 mean?

OBD2 code P1487 flags a problem with the sensor and actuator circuits (SCP). The car is usually drivable while you plan the repair. Common culprits: open or shorted wiring in the circuit, faulty sensor or actuator of the affected circuit, corroded, loose or damaged connector.

Code P1487 indicates a problem within the sensor and actuator communication pathways — specifically the SCP network — that operates within the powertrain control system. When the engine control unit detects a fault in these circuits that persists across defined operating conditions, it stores P1487 and triggers the check engine light. The module doesn't set this code on a single bad reading; it requires the fault condition to repeat before committing it to memory.

The freeze frame data stored with P1487 is the most valuable piece of information here. This snapshot records engine load, RPM, coolant temperature, and vehicle speed at the precise moment the fault was detected. Armed with this data, technicians can replicate those exact conditions during testing, making the diagnostic process far more targeted and efficient.

Symptoms of P1487

• Check Engine Light remains illuminated
• Vehicle may enter limp-home mode depending on which component is affected
• The related system operates intermittently or stops working entirely
• Fuel economy may decrease in certain driving scenarios
• Engine performance feels reduced under acceleration
• Unusual electrical behavior from sensors or actuators

Common Causes

• Failed driver circuit inside the control module
• Open or shorted wiring somewhere in the affected circuit
• Blown fuse protecting the circuit from overcurrent
• Corrosion buildup on connector pins preventing proper contact
• Loose or damaged electrical connectors
• Broken or chafed wiring insulation exposing copper
• Faulty sensor or actuator drawing abnormal current

How to Diagnose P1487

1. Connect an OBD2 scanner, confirm P1487 is stored in the ECU, and record the freeze frame data — this shows exactly what conditions existed when the fault occurred.
2. Look for related diagnostic trouble codes that often point to the actual problem. Check manufacturer TSBs for your specific make and model — many P0xxx codes have documented factory fixes or software updates available through the manufacturer website or NHTSA database.
3. Perform a thorough visual inspection of the wiring harness and connectors in the SCP circuit, looking for damaged insulation, corrosion, pin recession, or obvious physical damage.
4. With the connector unplugged, measure reference voltage, ground integrity, and signal continuity at the component side of the harness.
5. Perform a wiggle test on the harness while monitoring live data — any signal dropouts or interruptions reveal hidden wire breaks.
6. Clear the code, complete a full drive cycle including the specific conditions from the freeze frame data, and verify P1487 does not return.

Repair Options and Costs

Addressing P1487 means fixing whichever component in the SCP circuit has failed. The repair approach depends entirely on what the diagnosis reveals:

Control module driver repair or replacement: $300–$1,000

Wiring harness or connector repair: $80–$250

Faulty sensor or actuator replacement: $150–$500

Total Cost to Fix P1487

Actual repair costs vary based on which component triggered the code. At independent shop labor rates, most P1487 repairs fall between $80 and $1,000 total. Control module work sits at the higher end of that range, while wiring repairs are typically the least expensive option. The most practical approach is to diagnose thoroughly before purchasing parts — the cheapest fix is rarely the first place most people look, but it's also rarely the most likely.

Driving Safety Assessment

In most vehicles, P1487 does not render the car undriveable. You may notice reduced performance, a disabled辅助 system, or slightly altered driving characteristics. However, if the fault causes stalling, prevents starting, or triggers warnings related to braking or steering assist, treat it as a priority repair and avoid extended driving until diagnosed.